High Torque/High Precision Keyless Chucks with Shank, Jacobs R8

High precision keyless drill chuck - arbor is integrated into the internal socket of the drill chuck | This integrated design makes it impossible for the arbor and the drill chuck to become accidentally separated, providing a unit of greater rigidity and precision | As a result of its compact design, accumulated run-out is reduced to a minimum | Self-tightening feature automatically increases gripping force proportional to increased torque to prevent tool shank slippage | Right handed operation only | 100% individually controlled to ensure not to exceed a maximum total integrated run-out of 0.0016 in