Quickly attaches or detaches with recessed push button. Provides secure sling attachment that can't come loose. Mounting system will fit nearly every centerfire or rimfire bolt action made, plus many other action types. When detached, leaves a non-snag, flush base. Use Epoxy to hold base in stock, no screw required. Mfg: Uncle Mikes SPECS: Steel, blued. 1" (2.5cm) swivels. Requires 5/8" (16mm) thick forend wood to mount.