3/8 High Flow Air Fittings: you receive 20 pieces of 3/8 inch Female Quick Connect Air Couplers Industrial M-Type Couplings, with enough quantity to meet your different usage needs 3/8 Inch Female Threads Size: this Industrial M-Type Coupler is used to connect components to an air compressor stuff; Note: need to confirm the thread size Reliable Material: these Air Compressor Accessories Fittings are featured by a high-strength and hardness heat treatment process, which is and long-lasting; Offering increased resistance and a longer lifespan, with a maximum working pressure of 300 PSI Easy to Install: the coupler is equipped with six locking balls, which can firmly fix the plug and provide better grip when connecting and disconnecting; The sleeve guard helps reduce the risk of accidental disconnection and protects the coupler sleeve Multifunction Application:the Air Compressor Accessories for switching quicklybetween different air tools and accessories with ease during applications Color: Silver Material: Metal Package Contents: 20*3/8 High Flow Air Fittings Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.