Material - Made of Copper, Size: 27mm / 1.02 inch Length, rated to 4000 PSI, max pressure: 5000 PSI Accuracy - Use NC machining, accurately, this air fitting adapter has a universal fitting design that lets you connect your air gun to this quick-disconnect fitting Easy to Operation - To begin using your quick-disconnect adapter, simply hook up your adapter to your PCP air guns Special Feature - Air fitting adapter includes an flow restrictor, and it fills your air guns slowly while reducing the heat build-up in the cylinder QC02 Quick Coupler Socket - Take this small adapter anywhere you go, and it can attach to a variety of PCP air guns whenever you need to! QC02 Quick Coupler Socket suits our QC03 Plug, High Pressure Fill Valve, Daystate, Benjamin, Brocock, Crosman, Logun Eagle, PCR1, Ripley most HPA Paintball & Air Soft Tank side fill nipples & other compatible fill couplers. Remove the 1/8" BSPP male adapter, and you have a 1/8" BSPP female to a Foster quick-disconnect female. Multiple connection possibilities!