Pex Combo Tool squeeze the copper rings used on PEX brass fittings. ... systems are used for potable water lines ,radiant heat. Pex Combo Tool ,Pipe crimping tool,pipe tool------------------------------------------------------------------------------------------------------------------------------PXCR and PEXOH PEX ... Measurement:40.5x11x2.9cmPackage:inner:blister bagOuter:carton20pc/ctn Pex Combo Tool