Zeluga 3/8in. L-Shaped Large Rafter Hook for Nail Guns with 3/8in. NPT Air Fitting. Single hole L shaped hook used for air tools with 3/8in. NPT fitting. Useful and handy for framers or anyone that need an extra hand. Reduces tool damage and free up hands by hooking nail gun on the tool belt. Used for all nail guns with 3/8in. fitting mount, framing, roofing, siding guns. Fits all pneumatic tools with 3/8in. NPT fitting. Simple install specifications with hole 3/8" and dimensions 4-3/8" x 5-1/8".