CAT40 ER20 Collet Chucks 4 Pcs w Projection 2.76"-4" Balanced G2.5 @20,000 RPM

Package includes: 2PC CAT40 ER20 collet chucks with Projection 2.76"; 2PC CAT40 ER20 collet chucks with Projection 4". Balanced to G2.5 @20,000 RPM Tested T.I.R: 0.0001" Made of Prime Quality alloy steel and hardened to HRC 60-62.