* All KP model drill chucks are 100% inspected to ensure not to exceed a maximum total integrated run-out of 0.0016". * The self-tightening feature automatically increases clamping force proportional to increased torque to prevent tool shank slippage. This is standard for right-hand rotation applications, left hand rotation is available upon request. * The KP Series of drill chucks is well suited for use on drill presses with high accuracy: jig bore machines, horizontal and vertical milling machines, and production drilling machines. * All components of the KP drill chuck series that are exposed to wear have been hardened to maintain accuracy and extend the tool and chuck life.