4 Pack, 1" x 4", Copper Tube Size Baby J-Hook Pipe Holder, Supports Copper, CPVC, PB & PEX Water Supply Lines From Joists Or Rafters, Design Snaps Pipe Into Place Before Attaching To Joists Or Rafters, Nail Holes On All 4 Sides, Made Of High Impact ABS, Nails Included, Poly Bag.