【KIT INCLUDES】:10×Male Hex Nipple and extra 1 PTFE pipe seal tape. 【STURDY MATERIALS】: Air Hose Fittings are made of brass, which is rustproof, corrosion resistance and durable. 【CONNECTOR TYPE】: Industrial type, also known as M/D type, compatible with industrial/M/D type air fittings 【PRODUCT SIZE】: 1/4 inch NPT thread × 1/4 inch body size, interchangeable with most manufacturers; maximum working pressure is 300 psi,Used for a variety of air tools such as air compressors, air blow guns, air nailers etc. 【After Sale】：YELUN always provide our customers excellent service. To ensure your complete satisfaction, we also provide a 90-day no problem refund service. If you have any other questions, please feel free to contact us and we will try our best to solve all problems for you. 1/4 Inch NPT Brass Female and male Air Hose Quick Connect Adapter Male Hex Nipple,Brass Air Hose Fittings Plug Kit