The 649X4 from Sioux Chief is a set of 1" PEX Copper Crimp Rings. PEX copper crimp rings are the most popular and easy-to-install crimp rings for PEX pipe. Used together with a PEX crimp tool and 1" crimp style PEX fittings.
|Fitting System Compatibility:||Crimp|
|Type:||Copper Crimp Rings|