Precise Spring Collet ER-40 1/2", Range .472-.511 - 3900-5279 Made of high grade tool steel. Hardened and precision ground. Meets or exceeds Federal specifications. Collet must be placed into collet chuck nut before inserting into collet chuck. Major diame
Precise Spring Collet ER-40 1/2″, Range .472-.511 – 3900-5279
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