Klein Tools 85191HD Flip Socket Conduit Reamer Driver reams and smooths 1/2-inch (13mm), 3/4-inch (19mm), and 1-inch (25mm) conduit without requiring component removal. This tool features an improved leaf spring design that provides a secure grip, while the auto-lock mechanism securely connects to quick-connect handles, with a simple collar pull-back to release. The 3-in-1 flip socket functions as a magnetic bit holder, and the Cushion-Grip? handle provides extra torque and comfort.