EASILY SECURE PEX TUBING: Half clamp design makes it easy to insert and remove pipe, while grip friction ring ensures piping is supported securely. DURABLE PLASTIC: This J-hook is crafted from highly durable plastic for best long lasting pipe support FOR PVC PEX TUBING: This clamp is intended for PVC/PEX tubing. Not intended for CPVC BONUS PACK: Pack of 5 hooks. This quantity will suffice your project so you don’t stay stuck in the middle NAILS INCLUDED: Includes nails for the clamps, so you have everything you need for you project