IWISS 3/4-Inch Stainless Steel Cinch Clamp Rings for PEX Pipe 10 PCS-Pack Meets ASTM 2098 3/4-Inch stainless steel Cinch clamps 10PCS-Pack Interlocking ring that forms a complete 360-Degree watertight seal Perfect for connecting PEX to crimp type fittings in hard to reach spaces Simply pinch the tab closed with the CinchTool to make the connection