The new CinchClamp from Watts Radiant goes where other fittings can't-tight, hard to reach places. The clamp features a unique "tab" design, so there is no need to get a tool around the entire fitting. Press the tab closed with the CinchTool, and the connection is complete. CinchClamp's tab design offers a positive mechanical connection, ensuring the WaterPEX is uniformly compressed against the fitting. The ratchet tool only releases when proper assembly is complete. Watts Radiant.