Torque/Precision Keyless Drill Chuck – 0.039″-512″ Capacity-2JT Mount
•Precision Tested and Certified to .0016″ T.I.R. Maximum at Half Capacity. •For Use on Cnc Machining Centers in Drilling, Boring, Counter-Boring and Milling Operations Requiring Heavy Penetration. •Furnished with Spanner Wrench to Allow the Application of Supplementary Gripping Torque. Light Tightening Increases Gripping Torque Up to 3 Times Higher Than Hand Tightening. •Resists Tool Loosening on High-Speed Machines with Right Hand Rotation and Instant Spindle Stop. •2Js Mount is A Short Taper.