The GrovTec Sling Swivel Stud Installation Tool is the perfect accessory for installing sling swivel studs. The tool is constructed of heat treated carbon steel to stand up to years of use. The innovative design keeps the tool away from the stock and allows you to better control the swivel stud, allowing for perfect alignment and no scratches on your expensive rifle stocks. The shank of the tool is a hex base, so the tool can be clamped in a standard drill chuck, or turned with a 1/4" driver. Made in the U.S.A.