PEXLock? 30777 PEX Reducing Tee, 1" x 3/4" x 3/4" BRAND NEW! THE PACKING WAS OPENED AND INSPECTED. PEXLock? PEX Reducing Tee provides branch line from main line. High-grade malleable polymer that resists freezing, cracking and extreme heat. Use pliers to squeeze together two ears on clamp until you hear a click or ears overlap. Remove if need be with a screwdriver. Works on PEX or PERT pipe. Size: 1" x 3/4" x 3/4" Works on PEX or PERT pipe Rated at 180 degrees at 100 PSI and 73 degrees at 200 PSI NSF and CSA approved for new building behind wall and underground application For installation use a pair of slip joint pliers Bagged.