R8 10 PIECE ER-40 SPRING COLLET CHUCK SET (3900-0004)

ER-40 R8 10 Piece Spring Collet Chuck Set High precision collet chuck system suitable for all milling and drilling applications. Unique self-releasing system. Accuracy to .0005". Wide holding range. Comes with a fitted case. Drawbar end thread is 7/16"-20. Shipping Weight: 8.5 lbs