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Ball bearing construction, Electroless nickel plating, TiN coated jaws, Integral shanks, R8: < 0.0020" runout or better - details see: https://www.machineto.com/integral-drill-chuck-holders-10157109

JT Tooling System---Integral Drill chuck Holders :

Features & Benefits

1 Compact design and small head prevent drill slippage during operation

2 Coolant-thru capable

3 Self-tightening feature automatically increases gripping force proportional to increased torque to prevent tool shank slippage.

4 All components exposed to wear are completely hardened to maintain accuracy and extend chuck life.

5 Tightened and released by hand, they permit more rapid tooling changes to increase machining productivity.

6 A self-tightening chuck feature produces significantly higher gripping force to resist tool shank slippage.