Zurn 3/8 in. CTS X 3/8 in. D CTS Polybutylene Coupling

QickTite fittings ease repairs and retrofit installations with no specialty tools needed. Compatible with Zurn PEX potable (non-barrier) tubing, CPVC, copper and polybutylene piping. The QickTite nut-ring-cone connections are for use with CTS (copper tube size) pipe including PEX, copper, CPVC and polybutylene in potable water systems. *