General description Push-fit couplings are an economical, quick, and easy way to create your own workshop ring main air supply, as well as pipe work for water, beverages, and inert gas supplies. These plastic push-fits are a lightweight solution that will not corrode, making them ideal for professional workshops. Technical specifications Size: 12mm x 12mm Quantity: 5 pieces PSI Range Temp range 1°C - 64°C: 170 PSI PSI Range Temp range 65°C +: 100 PSI ISO 9001:2008 certified ANSI/NSF - 61 compliant Other information Unique collet design for quick and easy connection and disconnection.