ER-40 Collet Chuck + 15 Collets Set NMTB 40 Spindle
* Produced according to AT3# specifications.
* ER-40 Collet Clamping Range 1/8" - 1"
* Made of alloy forged steel for long durable life.
* Hardened to RC 52-56 and ground to ensure maximum accuracy.
* End Mill Socket T.I.R. 0.0002"
15 Bison Collets ER-40 Include:
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