26 PCS ER32 Collet Set, 1/32''-13/16" Precision Spring ER32 Shank Chuck for Boring, Drilling, Tapping, Milling Lathe Engraving Tool

26 Pcs ER32 Collet Set, Sizes Included: 1/32", 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", 25/32", 13/16" | TRUE DOUBLE ANGLE for Better Accuracy, the runout is 0.0003" for size 1/8" and larger, and 0.00059" for undersize 1/8". | HIGH HARDNESS: Made of high-quality alloy spring steel and hardened to HRC 44-48 and all critical surface is precision ground. | This collet size is true imperial fractional size, not a metric converting size and the surface on this collet has been specially treated to increase its tool life.