23 PC 1/16'' - 3/4'' Precision R8 Collet Set Harden Machinist Tool 1/16'' - 3/4'' R8 collet set ; 23 Piece ; .0006" TIR Sizes: 1/16'', 3/32'', 1/8'', 5/32'', 3/16'', 7/32'', 1/4'', 9/32'', 5/16'', 11/32'', 3/8'', 13/32'' , 7/16'', 15/32'', 1/2'', 17/32'', 9/16'', 19/32'', 5/8'', 21/32'', 11/16'', 23/32'', 3/4'' Made of highest grade steel available;Precision ground to close tolerance; Quantity: 1 set (23 pc) per order ; Shipping Weight: 16 LBS ;Hardened and ground throughout