Pre Soldered Coupling "1/2"" C X C ROLL-STOP COUPLING",Mueller Industries,611-203HC" /> "RAPID-FIRE" PRE-SOLDERED FITTINGS Copper x copper pre-soldered coupling with stop 100% lead-free solder in each fitting Reduced installation time; excellent for use in tight spaces Complies with ANSI/NSF61 and IAPMO IGC100-98 requirements