ER20 COLLETS SET 1/8" to 1/2" (11 PCs) PRIME QUALITY TESTED RUN OUT 0.0003"
Made from alloy spring steel and hardened to HRC 44-48. We will do our best to fix it. Hole Size:1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2". All of our products are 100% inspected.