11pc ER32 collet set : 1/8" - 3/4" by 16th (1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4) 2. All collets are made of high quality alloy spring steel 0.0005 accuracy 3. Rear Thread is 3/8-16 4.
Hardened and precision ground 5. 1pc MT2-ER32 collet chuck, 11PCS ER32 collets, 1pc ER32 spanner 6. 13.58 x 11.02 x 3.94 in.