IMPORTANT NOTE: "Pipe Thread Size" DOES NOT directly correspond to Actual Dimensions of the thread. Features Designed for Polyurethane or Nylon tubing Quick and Reliable connections Reusable: Multiple connections/disconnections Convenient elliptical sleeve configuration Metallic body made of non-corrosive, non-contaminant Nickel-plated Brass Pre-coated threads are ready to use without additional sealing Interior Hexigonal/Allen wrench tightening Specifications Fluid Type: Air Operating Pressure: 0- 150 PSI / 0 - 9.9 kgf / cm2 (0-990kPa) Working Temperature: 32-140°F / 0-60°C Metallic Body: Nickel-plated Brass 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) This precision product works great with other quality MettleAir accessories.