Application: 5 piece G-Style couplers, plugs and reducer kit are the highest SCFM rated and perfect fits for applications that require more than 60 SCFM. Function: 1/2" body size air fitting. 1/2" national pipe thread,Max inlet pressure of 300 pounds per square inch,Air flow of 99 standard cubic feet per minute,Max Temperature 250° F. Products include: 1*Female coupler(#1815), 1* Male coupler (#1816), 1*Male plug (#1857), 1*Female plug (#1858), 1*reducer bushing (#652-8). High-quality: Made of case hardened steel,High hardness. Durable and rust resistant.These 1/2" Male and Female NPT G-style plugs offer 2 different sizes (.125 or .375 critical profile dimension tip sizes) which can function with both 1/2” Male and Female G-style coupler. Satisfaction Guarantee: If you are not completely satisfied with our product, simply return it within 30 days to receive a complete refund. The warranty period is 12 months. Should you have any questions about our product, our customer service team is always ready to assist you. Application: 5 piece G-Style couplers, plugs and reducer kit are the highest SCFM rated and perfect fits for applications that require more than 60 SCFM.