This Pex Clamp Kit contains the three most common clamp sizes used in the Pex industry, plus a 3-Handle Ratchet Pincer to install all clamp sizes in the kit. Pex Clamps are currently being used on Polyethylene cross-linked pipe applications by the Pex Plumbing Industry. The specified clamps are suitable for fast and secure connections of Pex pipes in the plumbing field. The clamp design ensures tamper detection. The clamp sizes are solely intended for Pex applications with corresponding inch sizes.