About this item 【100pcs 1/2" Rings】- Copper crimps rings set include 100pcs 1/2" copper crimps rings, which can be used to connect PEX fittings and PEX pipes. 【Premium Material】-1/2" PEX copper crimp rings are made of a strong and sturdy copper, whose strength and resistance to corrosion make it an ideal material for plumbing applications. PEX copper crimp rings comply with ANSI/NSF-61, ASTM Standard F1807 and NSF372. 【Crimping Tool Installation】- You need to install the copper ring on the pipe, then insert the fitting into the pipe, slide the copper ring over the pipe, and use a crimping tool to tighten the copper ring. 【Easy to Install】- 100 pack PEX copper crimp rings can be easily installed without flame, flux, or solder, requires no bonding agents, glue, or solvents. 【Wide Application】- 1/2" PEX copper crimp rings are suitable for 1/2" PEX pipe and PEX fittings, they are used in potable water and hydronic heating water distribution. › See more product details