This tiny wedge key measures .250" wide b .075" thick by 1.31" long beneath the head. We recommend it for use on fullstock longrifles, Hawken rifles, and Tennessee rifles with barrels up to 1" octagon. Slotted, the slanted head conforms to curved forends. Use our #KEY-60-I for a straight head version of this key for halfstocks, or forearms. Wax cast in steel.