iCrimp F1960 PEX-a Expansion Tool with PEX Pipe Cutter & Expandder Heads(3\/8'', 1\/2'', 3\/4'', 1'') for Expanding Uponor ProPex Type Expansion Rings

PEX-a Expansion

PEX A uses an expansion-style fitting and expansion ring. These fittings are much larger in diameter the PEX B fittings, and require an expansion tool. Using the expansion tool, you enlarge the pipe and sleeve in order slide in the fitting.