Oatey 33742 DWV J-HOOK, 1 Piece, White, 3-Inch x 7-Inch Pre-loaded nails in stem. Diagonal nail path for use in tight applications. Locking finger for tight hold at any angle, including inverted. Additional holes allow securing with cable ties or other fasteners. Made of black and white ABS. Temperature range: -40F - 180F. UPC listed. Use with copper, PVC, CPVC, galvanized, PEX and other piping systems Support pipe from rafters or joists Self-nailing