Designed for Polyurethane or Nylon tubing. Quick and Reliable connections. Reusable: Multiple connections/disconnections. Convenient elliptical sleeve configuration. Specifications: Fluid Type: Air, Operating Pressure: 0- 150 PSI / 0 - 9.9 kgf / cm2 (0-990kPa), Working Temperature: 32-140°F / 0-60°C, O-Ring: NBR (Acrylonitrile butadiene rubber), Plastic Body: PBT (Polybutylene terephthalate), Packing: NBR (Acrylonitrile butadiene rubber), Back Ring: POM (Polyoxymethylene plastic), Lock Claws: Stainless Steel, Collar: Zinc Alloy, Sleeve: POM (Polyoxymethylene plastic).