Fast single tool changing - no need to touch drawbar after inserting master holder.
Spring collets are hardened and ground for maximum holding power and ultra-precision.
Drawbar thread: R8 shanks 7/16" - 20;
Collets must be snapped into the nut before inserted and tightened into the holder.
Accuracy: 0.00059"(0.015mm);
Each complete kit includes 1 piece chuck holder with 1pc OZ clamping nut, nominal size OZ full grip collets, 1pc non-slip spanner wrench, & 1pc molded plastic case.
15Pc set includes the collets of the following sizes: 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16" and 1"; it also includes the wrench & R8 BridgePort chuck holder