IRWIN Black Oxide High Speed Impact 10pc Drill Bit Set w Case 1881322 3 32" Strong magnetic tips allow for Strong magnetic tips allow for contact through the base of the socket to hold nuts and bolts in place during use fastening and driving applicationsAluminum gear housing with protective rubber frontExternally accessible brushes — For easy brush replacement1 4" hex drive with Quick ReleaseVariable speed trigger — For complete controlMulti purpose reversible tool hookMultiple position swivel LED lighting system — Increases visibility great for dark or enclosed areasTool Specifications:Battery Charger: 1 Hour ChargerDrive: 1 4" HexImpact Rate: 0 3 they have a 1 4" quick change shank that's designed to work in all impact drivers These bits are made from premium high speed steel with a black oxide finish for added corrosion resistance