DXT1020 Diablo 1/4 in x 12 in Universal Extension Diablo’s Universal Extensions provide access in hard to reach areas by extending the length of your power tool accessory. A quick-change feature that requires no additional tools allows users to switch between accessories with no down time. This range of extensions is Impact Strong™ for increased shank stability and durability in cordless and corded impact and drill drivers. Extend reach in hard to access areas Impact Strong™ increases shank stability and durability Effortlessly switch between accessories and sizes No tools required Maximum performance in cordless and corded impact and drill drivers LENGTH : 12 in SHANK : 1/4 in Hex