Brass Insert For PPR Fittings Size range:20,25,32,40,50, ... or 1/2"-3" Supply to PPR fittings factories Brass Insert For PPR Fittings1) With 59 brass or CW6172)Size range ... many PPR factories5) Brass Insert, Round Brass Knurled Insert, Brass Hexagonal Insert, Brass Square Inserts, Brass plastic Insert, Threaded Brass Insert Screw can be developed ...