ER collet nut wrench in 14 sizes covering ER8 to ER50 in A, M and UM nut types, plus 10 hook spanners for nut diameters 18 to 110mm. Spanner, wrench, collet key — same tool, and the name changes with the shop. What does not change is that the nut decides it: an ER20-A, an ER20-M and an ER20-UM nut are three different outside diameters, so measure the nut. The hook spanners are the other half of this page: they cover EOC6 to EOC50, the APU08, APU13 and APU16 drill chucks, and the UM nuts from ER25 up. Lengths run 70 to 350mm. Hardened steel throughout.
| Cart+ | SKU | Price | Quantity | Total | Applicable | Nut Dia (mm) | L (mm) | V (mm) | K (mm) |
|---|---|---|---|---|---|---|---|---|---|
SP-ER11-A | $6 | $0 | ER11-A | 19 | 110 | 40 | 17 | ||
SP-ER16-A | $7 | $0 | ER16-A | 28 | 120 | 53 | 25 | ||
SP-ER20-A | $7 | $0 | ER20-A | 34 | 130 | 60 | 30 | ||
SP-ER8-M | $3 | $0 | ER8-M | 12 | 70 | 12 | 7.5 | ||
SP-ER11-M | $4 | $0 | ER11-M | 16 | 90 | 17 | 11 | ||
SP-ER16-M | $5 | $0 | ER16-M | 22 | 110 | 23 | 15 | ||
SP-ER20-M | $5 | $0 | ER20-M | 28 | 120 | 29 | 19.5 | ||
SP-ER25-M | $5 | $0 | ER25-M | 35 | 130 | 36 | 25 | ||
SP-ER16-UM | $6 | $0 | ER16-UM | 32 | 180 | 40 | 26 | ||
SP-ER20-UM | $7 | $0 | ER20-UM | 35 | 190 | 55 | 30 | ||
SP-ER25-UM | $8 | $0 | ER25-UM | 42 | 210 | 60 | 35 | ||
SP-ER32-UM | $9 | $0 | ER32-UM | 50 | 250 | 72 | 45 | ||
SP-ER40-UM | $10 | $0 | ER40-UM | 63 | 290 | 86 | 58 | ||
SP-ER50-UM | $12 | $0 | ER50-UM | 78 | 350 | 105 | 73 | ||
SP-18-21 | $5 | $0 | EOC6 | 18-21 | 90 | 18 | 21 | ||
SP-22-26 | $5 | $0 | EOC8 | 22-26 | 125 | 22 | 26 | ||
SP-28-32 | $5 | $0 | EOC10 | 28-32 | 140 | 28 | 32 | ||
SP-34-36 | $5 | $0 | EOC12 | 34-36 | 154 | 34 | 36 | ||
SP-38-42 | $5 | $0 | EOC16 7316A APU08 | 38-42 | 168 | 38 | 42 | ||
SP-45-52 | $6 | $0 | EOC20 ER25-UM 7316B APU13 | 45-52 | 190 | 45 | 52 | ||
SP-55-62 | $7 | $0 | EOC25 ER32-UM APU13 APU16 C20 C22 C25 | 55-62 | 210 | 55 | 62 | ||
SP-68-72 | $7 | $0 | EOC32 ER40-UM | 68-72 | 230 | 68 | 72 | ||
SP-78-85 | $8 | $0 | EOC40 C32 ER50-UM | 78-85 | 240 | 78 | 85 | ||
SP-100-110 | $9 | $0 | EOC50 C42 JXT25-50 | 100-110 | 250 | 100 | 110 |
24 wrenches: 14 for ER nuts, 10 hook spanners
ER-A, ER-M and ER-UM spanners from ER8 up
ER-UM spanners cover the large nuts up to ER40 and ER50
Hook spanners for nut diameters 18 to 110mm
Hook spanners also fit EOC, APU, C-type and 7316 nuts
A, M and UM nuts of one ER size take different wrenches
Overall length 70 to 350mm
Hardened steel
The Applicable column in the chart lists what each fits
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