This is the perfect hanger set for Hitachi and other brands nail guns. (all nail guns with 3/8 fitting mount. Framing, siding, roofing guns etc.) Details Features: Fits pneumatic tools with 3/8'' fitting Extra wide width Hook nail gun on your tool belt to reduce tool damage and free up hands Perfect for hanging on trusses, I joist, and on your own nail bag Specifications: Hole: 3/8" Dimensions: 4-1/8" x 2-5/16" More Information Model# GH9 UPC 099461763357 WARNING California Proposition 65 Brand Superior Parts