IWISS PEX Pipe Expansion Tool Kit with 3/8", 1/2",3/4",1" Expander Heads and PEX Pipe Cutter for Propex Expansion suit Propex Wirsbo Uponor Meets ASTM F1960 Standard Meet ASTM F1960 Standard. Go/no-go gauges are never required. Expands type A PEX pipe for insertion of ASTM F1960 expansion-style fittings. This tool can be used with most types of PEX pipe, including Propex, Wirsbo, and Uponor. Package includes expander tool, 3/8,1/2", 3/4" & 1" expansion heads, lubricating grease, PEX pipe cutter - all in a durable carry on plastic hard case.