●PEX Cinch Clamps are made of 304 stainless steel,will not break during clipping,salt resistant, anti rust, anti-corrosion, construction,low Temperature Strength ●These Interlocking rings provide a fast and reliable connection of all PEX pipes fittings,easier to install, clamp more securely, and fast,more concentrated sealing pressure ●304 Stainless steel cinch crimp rings are constructed with high-quality materials,can withstand heavy use without cracking or leaking,combining durability and ease of use,it can be tightly sealed in all directions, with smooth edges and no burr, and will not cause any damage to the pipe ●Widely applications in all plumbing water supply system,securing hoses, air lines, vacuum hoses, garden hose,water heater, cable, tube, fuel lines,home maintenance,automotive, industrial, marine etc. ●Products include 5 different sizes(3/8", 1/2, 5/8, 3/4 and 1) Pex clamps total of 112PCS,comes in a storage box;put PEX clamp ring on the pipe, connect the pipe to the pipe fitting, and tighten the compression ring with PEX tool to ensure firm connection