CAT40 and CAT50 shrink fit tool holder, runout ≤0.003 mm, in 13 metric and 10 inch bore sizes from 3 mm to 1-1/4", balanced G2.5 at 25,000 rpm. The body is heat-resistant hot-work tool steel, designed to withstand repeated heating cycles. The slim 4.5° nose profile provides clearance in tight fixtures and deep pockets. Every model from 6 mm and 1/4" up has threaded holes for balancing screws, allowing quick fine balancing if required — better surface finish, less spindle wear. Shanks are cut to ANSI B5.50, the V flange steep taper standard for CAT tool holders. Clamps HSS and solid carbide shanks; the pull stud is ordered separately. Bore sizes and lengths are in the chart below.
| Cart+ | SKU | Price | Quantity | Total | d | D | D1 | L | L2 | L1 | N | G |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
CAT40-SF03-80 | $113 | $0 | 3mm | 15mm | 20mm | 80mm | 60.9mm | - | - | - | ||
CAT40-SF04-80 | $113 | $0 | 4mm | 15mm | 20mm | 80mm | 60.9mm | - | - | - | ||
CAT40-SF05-80 | $113 | $0 | 5mm | 15mm | 20mm | 80mm | 60.9mm | - | - | - | ||
CAT40-SF06-80 | $113 | $0 | 6mm | 21mm | 27mm | 80mm | 60.9mm | 36mm | 10mm | M5 | ||
CAT40-SF08-80 | $113 | $0 | 8mm | 21mm | 27mm | 80mm | 60.9mm | 36mm | 10mm | M6 | ||
CAT40-SF10-80 | $113 | $0 | 10mm | 24mm | 31mm | 80mm | 60.9mm | 42mm | 10mm | M8x1 | ||
CAT40-SF12-80 | $113 | $0 | 12mm | 24mm | 31mm | 80mm | 60.9mm | 47mm | 10mm | M10x1 | ||
CAT40-SF14-80 | $113 | $0 | 14mm | 27mm | 34mm | 80mm | 60.9mm | 47mm | 10mm | M10x1 | ||
CAT40-SF16-80 | $113 | $0 | 16mm | 27mm | 34mm | 80mm | 60.9mm | 50mm | 10mm | M12x1 | ||
CAT40-SF18-80 | $113 | $0 | 18mm | 33mm | 40mm | 80mm | 60.9mm | 50mm | 10mm | M12x1 | ||
CAT40-SF20-80 | $113 | $0 | 20mm | 33mm | 40mm | 80mm | 60.9mm | 52mm | 10mm | M16x1 | ||
CAT40-SF25-100 | $125 | $0 | 25mm | 44mm | 53mm | 100mm | 80.9mm | 58mm | 10mm | M16x1 | ||
CAT40-SF32-100 | $125 | $0 | 32mm | 44mm | 53mm | 100mm | 80.9mm | 62mm | 10mm | M16x1 | ||
CAT40-SF06-120 | $136 | $0 | 6mm | 21mm | 27mm | 120mm | 100.9mm | 36mm | 10mm | M5 | ||
CAT40-SF08-120 | $136 | $0 | 8mm | 21mm | 27mm | 120mm | 100.9mm | 36mm | 10mm | M6 | ||
CAT40-SF10-120 | $136 | $0 | 10mm | 24mm | 32mm | 120mm | 100.9mm | 42mm | 10mm | M8x1 | ||
CAT40-SF12-120 | $136 | $0 | 12mm | 24mm | 32mm | 120mm | 100.9mm | 47mm | 10mm | M10x1 | ||
CAT40-SF14-120 | $136 | $0 | 14mm | 27mm | 34mm | 120mm | 100.9mm | 47mm | 10mm | M10x1 | ||
CAT40-SF16-120 | $136 | $0 | 16mm | 27mm | 34mm | 120mm | 100.9mm | 50mm | 10mm | M12x1 | ||
CAT40-SF18-120 | $136 | $0 | 18mm | 33mm | 42mm | 120mm | 100.9mm | 50mm | 10mm | M12x1 | ||
CAT40-SF20-120 | $136 | $0 | 20mm | 33mm | 42mm | 120mm | 100.9mm | 52mm | 10mm | M16x1 | ||
CAT40-SF25-120 | $136 | $0 | 25mm | 44mm | 53mm | 120mm | 100.9mm | 58mm | 10mm | M16x1 | ||
CAT40-SF06-160 | $159 | $0 | 6mm | 21mm | 32mm | 160mm | 140.9mm | 36mm | 10mm | M5 | ||
CAT40-SF08-160 | $159 | $0 | 8mm | 21mm | 32mm | 160mm | 140.9mm | 36mm | 10mm | M6 | ||
CAT40-SF10-160 | $159 | $0 | 10mm | 24mm | 34mm | 160mm | 140.9mm | 42mm | 10mm | M8x1 | ||
CAT40-SF12-160 | $159 | $0 | 12mm | 24mm | 34mm | 160mm | 140.9mm | 47mm | 10mm | M10x1 | ||
CAT40-SF14-160 | $159 | $0 | 14mm | 27mm | 42mm | 160mm | 140.9mm | 47mm | 10mm | M10x1 | ||
CAT40-SF16-160 | $159 | $0 | 16mm | 27mm | 42mm | 160mm | 140.9mm | 50mm | 10mm | M12x1 | ||
CAT40-SF18-160 | $159 | $0 | 18mm | 33mm | 50mm | 160mm | 140.9mm | 50mm | 10mm | M12x1 | ||
CAT40-SF20-160 | $159 | $0 | 20mm | 33mm | 50mm | 160mm | 140.9mm | 52mm | 10mm | M16x1 | ||
CAT40-SF25-160 | $159 | $0 | 25mm | 44mm | 53mm | 160mm | 140.9mm | 58mm | 10mm | M16x1 | ||
CAT40-SF32-160 | $159 | $0 | 32mm | 44mm | 53mm | 160mm | 140.9mm | 62mm | 10mm | M16x1 | ||
CAT40-SF06-200 | $212 | $0 | 6mm | 21mm | 32mm | 200mm | 180.9mm | 36mm | 10mm | M5 | ||
CAT40-SF08-200 | $212 | $0 | 8mm | 21mm | 32mm | 200mm | 180.9mm | 36mm | 10mm | M6 | ||
CAT40-SF10-200 | $212 | $0 | 10mm | 24mm | 34mm | 200mm | 180.9mm | 42mm | 10mm | M8x1 | ||
CAT40-SF12-200 | $212 | $0 | 12mm | 24mm | 34mm | 200mm | 180.9mm | 47mm | 10mm | M10x1 | ||
CAT40-SF14-200 | $212 | $0 | 14mm | 27mm | 42mm | 200mm | 180.9mm | 47mm | 10mm | M10x1 | ||
CAT40-SF16-200 | $212 | $0 | 16mm | 27mm | 42mm | 200mm | 180.9mm | 50mm | 10mm | M12x1 | ||
CAT40-SF18-200 | $212 | $0 | 18mm | 33mm | 50mm | 200mm | 180.9mm | 50mm | 10mm | M12x1 | ||
CAT40-SF20-200 | $212 | $0 | 20mm | 33mm | 50mm | 200mm | 180.9mm | 52mm | 10mm | M16x1 | ||
CAT40-SF25-200 | $212 | $0 | 25mm | 44mm | 53mm | 200mm | 180.9mm | 58mm | 10mm | M16x1 | ||
CAT40-SF32-200 | $212 | $0 | 32mm | 44mm | 53mm | 200mm | 180.9mm | 62mm | 10mm | M16x1 | ||
CAT50-SF06-80 | $237 | $0 | 6mm | 21mm | 27mm | 80mm | 60.9mm | 36mm | 10mm | M5 | ||
CAT50-SF08-80 | $237 | $0 | 8mm | 21mm | 27mm | 80mm | 60.9mm | 36mm | 10mm | M6 | ||
CAT50-SF10-80 | $237 | $0 | 10mm | 24mm | 31mm | 80mm | 60.9mm | 42mm | 10mm | M8x1 | ||
CAT50-SF12-80 | $237 | $0 | 12mm | 24mm | 31mm | 80mm | 60.9mm | 47mm | 10mm | M10x1 | ||
CAT50-SF14-80 | $237 | $0 | 14mm | 27mm | 34mm | 80mm | 60.9mm | 47mm | 10mm | M10x1 | ||
CAT50-SF16-80 | $237 | $0 | 16mm | 27mm | 34mm | 80mm | 60.9mm | 50mm | 10mm | M12x1 | ||
CAT50-SF18-80 | $237 | $0 | 18mm | 33mm | 40mm | 80mm | 60.9mm | 50mm | 10mm | M12x1 | ||
CAT50-SF20-80 | $237 | $0 | 20mm | 33mm | 39.5mm | 80mm | 60.9mm | 52mm | 10mm | M16x1 | ||
CAT50-SF25-100 | $263 | $0 | 25mm | 44mm | 52.5mm | 100mm | 80.9mm | 58mm | 10mm | M16x1 | ||
CAT50-SF32-100 | $263 | $0 | 32mm | 44mm | 52.5mm | 100mm | 80.9mm | 62mm | 10mm | M16x1 | ||
CAT50-SF06-120 | $286 | $0 | 6mm | 21mm | 27mm | 120mm | 100.9mm | 36mm | 10mm | M5 | ||
CAT50-SF08-120 | $286 | $0 | 8mm | 21mm | 27mm | 120mm | 100.9mm | 36mm | 10mm | M6 | ||
CAT50-SF10-120 | $286 | $0 | 10mm | 24mm | 32mm | 120mm | 100.9mm | 42mm | 10mm | M8x1 | ||
CAT50-SF12-120 | $286 | $0 | 12mm | 24mm | 32mm | 120mm | 100.9mm | 47mm | 10mm | M10x1 | ||
CAT50-SF14-120 | $286 | $0 | 14mm | 27mm | 34mm | 120mm | 100.9mm | 47mm | 10mm | M10x1 | ||
CAT50-SF16-120 | $286 | $0 | 16mm | 27mm | 34mm | 120mm | 100.9mm | 50mm | 10mm | M12x1 | ||
CAT50-SF18-120 | $286 | $0 | 18mm | 33mm | 42mm | 120mm | 100.9mm | 50mm | 10mm | M12x1 | ||
CAT50-SF20-120 | $286 | $0 | 20mm | 33mm | 42mm | 120mm | 100.9mm | 52mm | 10mm | M16x1 | ||
CAT50-SF25-120 | $286 | $0 | 25mm | 44mm | 53mm | 120mm | 100.9mm | 58mm | 10mm | M16x1 | ||
CAT50-SF32-120 | $286 | $0 | 32mm | 44mm | 53mm | 120mm | 100.9mm | 62mm | 10mm | M16x1 | ||
CAT50-SF06-160 | $334 | $0 | 6mm | 21mm | 32mm | 160mm | 140.9mm | 36mm | 10mm | M5 | ||
CAT50-SF08-160 | $334 | $0 | 8mm | 21mm | 32mm | 160mm | 140.9mm | 36mm | 10mm | M6 | ||
CAT50-SF10-160 | $334 | $0 | 10mm | 24mm | 34mm | 160mm | 140.9mm | 42mm | 10mm | M8x1 | ||
CAT50-SF12-160 | $334 | $0 | 12mm | 24mm | 34mm | 160mm | 140.9mm | 47mm | 10mm | M10x1 | ||
CAT50-SF14-160 | $334 | $0 | 14mm | 27mm | 42mm | 160mm | 140.9mm | 47mm | 10mm | M10x1 | ||
CAT50-SF16-160 | $334 | $0 | 16mm | 27mm | 42mm | 160mm | 140.9mm | 50mm | 10mm | M12x1 | ||
CAT50-SF18-160 | $334 | $0 | 18mm | 33mm | 51mm | 160mm | 140.9mm | 50mm | 10mm | M12x1 | ||
CAT50-SF20-160 | $334 | $0 | 20mm | 33mm | 51mm | 160mm | 140.9mm | 52mm | 10mm | M16x1 | ||
CAT50-SF25-160 | $334 | $0 | 25mm | 44mm | 60mm | 160mm | 140.9mm | 58mm | 10mm | M16x1 | ||
CAT50-SF32-160 | $334 | $0 | 32mm | 44mm | 60mm | 160mm | 140.9mm | 62mm | 10mm | M16x1 | ||
CAT50-SF06-200 | $445 | $0 | 6mm | 21mm | 32mm | 200mm | 180.9mm | 36mm | 10mm | M5 | ||
CAT50-SF08-200 | $445 | $0 | 8mm | 21mm | 32mm | 200mm | 180.9mm | 36mm | 10mm | M6 | ||
CAT50-SF10-200 | $445 | $0 | 10mm | 24mm | 34mm | 200mm | 180.9mm | 42mm | 10mm | M8x1 | ||
CAT50-SF12-200 | $445 | $0 | 12mm | 24mm | 34mm | 200mm | 180.9mm | 47mm | 10mm | M10x1 | ||
CAT50-SF14-200 | $445 | $0 | 14mm | 27mm | 42mm | 200mm | 180.9mm | 47mm | 10mm | M10x1 | ||
CAT50-SF16-200 | $445 | $0 | 16mm | 27mm | 42mm | 200mm | 180.9mm | 50mm | 10mm | M12x1 | ||
CAT50-SF18-200 | $445 | $0 | 18mm | 33mm | 51mm | 200mm | 180.9mm | 50mm | 10mm | M12x1 | ||
CAT50-SF20-200 | $445 | $0 | 20mm | 33mm | 51mm | 200mm | 180.9mm | 52mm | 10mm | M16x1 | ||
CAT50-SF25-200 | $445 | $0 | 25mm | 44mm | 60mm | 200mm | 180.9mm | 58mm | 10mm | M16x1 | ||
CAT50-SF32-200 | $445 | $0 | 32mm | 44mm | 60mm | 200mm | 180.9mm | 62mm | 10mm | M16x1 | ||
CAT40-SF1/8″-3.15″ | $113 | $0 | 0.125″ | 0.59″ | 0.79″ | 3.15″ | 2.40″ | - | - | - | ||
CAT40-SF3/16″-3.15″ | $113 | $0 | 0.187″ | 0.59″ | 0.79″ | 3.15″ | 2.40″ | - | - | - | ||
CAT40-SF1/4″-3.15″ | $113 | $0 | 0.250″ | 0.83″ | 1.06″ | 3.15″ | 2.40″ | 1.42″ | 0.39″ | M5 | ||
CAT40-SF5/16″-3.15″ | $113 | $0 | 0.312″ | 0.83″ | 1.06″ | 3.15″ | 2.40″ | 1.42″ | 0.39″ | M6 | ||
CAT40-SF3/8″-3.15″ | $113 | $0 | 0.375″ | 0.94″ | 1.22″ | 3.15″ | 2.40″ | 1.65″ | 0.39″ | M8x1 | ||
CAT40-SF1/2″-3.15″ | $113 | $0 | 0.500″ | 1.06″ | 1.34″ | 3.15″ | 2.40″ | 1.85″ | 0.39″ | M10x1 | ||
CAT40-SF5/8″-3.15″ | $113 | $0 | 0.625″ | 1.06″ | 1.34″ | 3.15″ | 2.40″ | 1.97″ | 0.39″ | M12x1 | ||
CAT40-SF3/4″-3.15″ | $113 | $0 | 0.750″ | 1.30″ | 1.65″ | 3.15″ | 2.40″ | 2.05″ | 0.39″ | M16x1 | ||
CAT40-SF1″-3.94″ | $125 | $0 | 1.000″ | 1.73″ | 2.09″ | 3.94″ | 3.19″ | 2.28″ | 0.39″ | M16x1 | ||
CAT40-SF1-1/4″-3.94″ | $125 | $0 | 1.250″ | 1.73″ | 2.09″ | 3.94″ | 3.19″ | 2.44″ | 0.39″ | M16x1 | ||
CAT40-SF1/8″-4.72″ | $136 | $0 | 0.125″ | 0.59″ | 0.79″ | 4.72″ | 3.97″ | - | - | - | ||
CAT40-SF3/16″-4.72″ | $136 | $0 | 0.187″ | 0.59″ | 0.79″ | 4.72″ | 3.97″ | - | - | - | ||
CAT40-SF1/4″-4.72″ | $136 | $0 | 0.250″ | 0.83″ | 1.06″ | 4.72″ | 3.97″ | 1.42″ | 0.39″ | M5 | ||
CAT40-SF5/16″-4.72″ | $136 | $0 | 0.312″ | 0.83″ | 1.06″ | 4.72″ | 3.97″ | 1.42″ | 0.39″ | M6 | ||
CAT40-SF3/8″-4.72″ | $136 | $0 | 0.375″ | 0.94″ | 1.26″ | 4.72″ | 3.97″ | 1.65″ | 0.39″ | M8x1 | ||
CAT40-SF1/2″-4.72″ | $136 | $0 | 0.500″ | 1.06″ | 1.34″ | 4.72″ | 3.97″ | 1.85″ | 0.39″ | M10x1 | ||
CAT40-SF5/8″-4.72″ | $136 | $0 | 0.625″ | 1.06″ | 1.34″ | 4.72″ | 3.97″ | 1.97″ | 0.39″ | M12x1 | ||
CAT40-SF3/4″-4.72″ | $136 | $0 | 0.750″ | 1.30″ | 1.65″ | 4.72″ | 3.97″ | 2.05″ | 0.39″ | M16x1 | ||
CAT40-SF1″-4.72″ | $136 | $0 | 1.000″ | 1.73″ | 2.09″ | 4.72″ | 3.97″ | 2.28″ | 0.39″ | M16x1 | ||
CAT40-SF1-1/4″-4.72″ | $136 | $0 | 1.250″ | 1.73″ | 2.09″ | 4.72″ | 3.97″ | 2.44″ | 0.39″ | M16x1 | ||
CAT40-SF1/8″-6.30″ | $159 | $0 | 0.125″ | 0.59″ | 0.79″ | 6.30″ | 5.55″ | - | - | - | ||
CAT40-SF3/16″-6.30″ | $159 | $0 | 0.187″ | 0.59″ | 0.79″ | 6.30″ | 5.55″ | - | - | - | ||
CAT40-SF1/4″-6.30″ | $159 | $0 | 0.250″ | 0.83″ | 1.26″ | 6.30″ | 5.55″ | 1.42″ | 0.39″ | M5 | ||
CAT40-SF5/16″-6.30″ | $159 | $0 | 0.312″ | 0.83″ | 1.26″ | 6.30″ | 5.55″ | 1.42″ | 0.39″ | M6 | ||
CAT40-SF3/8″-6.30″ | $159 | $0 | 0.375″ | 0.94″ | 1.34″ | 6.30″ | 5.55″ | 1.65″ | 0.39″ | M8x1 | ||
CAT40-SF1/2″-6.30″ | $159 | $0 | 0.500″ | 1.06″ | 1.65″ | 6.30″ | 5.55″ | 1.85″ | 0.39″ | M10x1 | ||
CAT40-SF5/8″-6.30″ | $159 | $0 | 0.625″ | 1.06″ | 1.65″ | 6.30″ | 5.55″ | 1.97″ | 0.39″ | M12x1 | ||
CAT40-SF3/4″-6.30″ | $159 | $0 | 0.750″ | 1.30″ | 1.75″ | 6.30″ | 5.55″ | 2.05″ | 0.39″ | M16x1 | ||
CAT40-SF1″-6.30″ | $159 | $0 | 1.000″ | 1.73″ | 2.09″ | 6.30″ | 5.55″ | 2.28″ | 0.39″ | M16x1 | ||
CAT40-SF1-1/4″-6.30″ | $159 | $0 | 1.250″ | 1.73″ | 2.09″ | 6.30″ | 5.55″ | 2.44″ | 0.39″ | M16x1 | ||
CAT50-SF1/4″-3.15″ | $237 | $0 | 0.250″ | 0.83″ | 1.06″ | 3.15″ | 2.40″ | 1.42″ | 0.39″ | M5 | ||
CAT50-SF3/8″-3.15″ | $237 | $0 | 0.375″ | 0.94″ | 1.26″ | 3.15″ | 2.40″ | 1.65″ | 0.39″ | M8x1 | ||
CAT50-SF1/2″-3.15″ | $237 | $0 | 0.500″ | 1.06″ | 1.34″ | 3.15″ | 2.40″ | 1.85″ | 0.39″ | M10x1 | ||
CAT50-SF5/8″-3.15″ | $237 | $0 | 0.625″ | 1.06″ | 1.34″ | 3.15″ | 2.40″ | 1.97″ | 0.39″ | M12x1 | ||
CAT50-SF3/4″-3.15″ | $237 | $0 | 0.750″ | 1.30″ | 1.65″ | 3.15″ | 2.40″ | 2.05″ | 0.39″ | M16x1 | ||
CAT50-SF1″-3.94″ | $263 | $0 | 1.000″ | 1.73″ | 2.09″ | 3.94″ | 3.19″ | 2.28″ | 0.39″ | M16x1 | ||
CAT50-SF1-1/4″-3.94″ | $263 | $0 | 1.250″ | 1.73″ | 2.09″ | 3.94″ | 3.19″ | 2.44″ | 0.39″ | M16x1 | ||
CAT50-SF1/4″-4.72″ | $286 | $0 | 0.250″ | 0.83″ | 1.06″ | 4.72″ | 3.97″ | 1.42″ | 0.39″ | M5 | ||
CAT50-SF3/8″-4.72″ | $286 | $0 | 0.375″ | 0.94″ | 1.26″ | 4.72″ | 3.97″ | 1.65″ | 0.39″ | M8x1 | ||
CAT50-SF1/2″-4.72″ | $286 | $0 | 0.500″ | 1.06″ | 1.34″ | 4.72″ | 3.97″ | 1.85″ | 0.39″ | M10x1 | ||
CAT50-SF5/8″-4.72″ | $286 | $0 | 0.625″ | 1.06″ | 1.34″ | 4.72″ | 3.97″ | 1.97″ | 0.39″ | M12x1 | ||
CAT50-SF3/4″-4.72″ | $286 | $0 | 0.750″ | 1.30″ | 1.65″ | 4.72″ | 3.97″ | 2.05″ | 0.39″ | M16x1 | ||
CAT50-SF1″-4.72″ | $286 | $0 | 1.000″ | 1.73″ | 2.09″ | 4.72″ | 3.97″ | 2.28″ | 0.39″ | M16x1 | ||
CAT50-SF1-1/4″-4.72″ | $286 | $0 | 1.250″ | 1.73″ | 2.09″ | 4.72″ | 3.97″ | 2.44″ | 0.39″ | M16x1 | ||
CAT50-SF1/4″-6.30″ | $334 | $0 | 0.250″ | 0.83″ | 1.26″ | 6.30″ | 5.55″ | 1.42″ | 0.39″ | M5 | ||
CAT50-SF3/8″-6.30″ | $334 | $0 | 0.375″ | 0.94″ | 1.34″ | 6.30″ | 5.55″ | 1.65″ | 0.39″ | M8x1 | ||
CAT50-SF1/2″-6.30″ | $334 | $0 | 0.500″ | 1.06″ | 1.65″ | 6.30″ | 5.55″ | 1.85″ | 0.39″ | M10x1 | ||
CAT50-SF5/8″-6.30″ | $334 | $0 | 0.625″ | 1.06″ | 1.65″ | 6.30″ | 5.55″ | 1.97″ | 0.39″ | M12x1 | ||
CAT50-SF3/4″-6.30″ | $334 | $0 | 0.750″ | 1.30″ | 2.01″ | 6.30″ | 5.55″ | 2.05″ | 0.39″ | M16x1 | ||
CAT50-SF1″-6.30″ | $334 | $0 | 1.000″ | 1.73″ | 2.36″ | 6.30″ | 5.55″ | 2.28″ | 0.39″ | M16x1 | ||
CAT50-SF1-1/4″-6.30″ | $334 | $0 | 1.250″ | 1.73″ | 2.36″ | 6.30″ | 5.55″ | 2.44″ | 0.39″ | M16x1 |
133 models to ANSI B5.50: CAT40 covers 3-32mm, CAT50 from 6mm and 1/4"
13 metric bores: 3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20, 25 and 32mm
10 inch bores: 1/8", 3/16", 1/4", 5/16", 3/8", 1/2", 5/8", 3/4", 1" and 1-1/4"
Gage lengths 80, 100, 120, 160 and 200mm; 3.15", 3.94", 4.72" and 6.30"
Clamping runout under 0.003mm (0.0001 in) — longer tool life
Dynamically balanced G2.5 at 25,000 rpm
Threaded bores for balancing screws, M5 to M16x1, 10mm (0.39") deep
Subsequent fine balancing: better surface quality, lower spindle wear
360° full surround grip — high clamping torque from the press fit in the bore
Heat resistant hot-working steel body, for repeated heat cycles
4.5° slim nose taper, short chamfer at the bore mouth
Clamps HSS and solid carbide shanks; pull stud ordered separately
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