IRWIN 4935655 Bit Holder, 7/16 in Drive, 1/4 in Shank, Hex Shank, Carbon Steel

Carbon steel construction sleeve and body for durability and life. Lock-n-Load system for one-handed quick release. Jaw design holds bits securely on 6-flatted shanks, as well as ball detent bits. The 7/16 in quick change range now holds insert bits, magnetic for holding.