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PEX x Polybutylene Repair Kits

These couplings are used for transition between PB (polybutylene) pipes and PEX tubing. Each repair kit comes with (1) PEX x PB brass coupling and (2) crimp rings - one for PEX tubing and another one for PB pipe. Available in regular or lead-free brass. Fully compatible with all brands of PEX Crimp Tools.