Description: brand new and high quality Feature: Nickel-plated or chrome-plated, corrosion-resistant and rust-proof. Self-locking design, more convenient to use. Reduces accidental airline disconnection. Pneumatic quick coupling is a type of quick coupling mainly used for air piping and pneumatic tools. It can connect or disconnect pipes without tools. Spring loaded quick release couplers which should be used on the compressor so that the air is contained when the air tool is disconnected. When using the coupler(s) slide back the sleeve, push in the connector and then slide back the sleeve fully to lock in the connector. Scope of application: Pneumatic pipe connection, air compressor, grinder, air drill, impact wrench, pneumatic screwdriver and other quick connectors for connecting pneumatic tools. Specifications: Item Type: Quick Connector Material: metal Size: SH total length: 66.8MM/2.6in, PH total length: 52.8MM/2.07in Color: silver Optional Type: 2020, 3030, 4040 Quantity: 1Pair Warm Tips: 1.When designing the hose for path, the spatial position of the pipeline assembly and disassembly and debugging should be guaranteed to avoid the interference of the mechanical device on the pipeline. 2.Before taking over, use compressed air to blow out impurities in the hose and joints. 3.The wiring should be neat and beautiful, grouped and numbered, and bundled for easy inspection. Attention should be paid to the working environment temperature of the hose, which directly affects the pressure resistance and working reliability of the hose. 4.The hose should not exceed the required length to reduce the air pressure loss in the pipeline. The radius of curvature of the pipeline is above the specified value, and the bent part should not be too close to the joint to avoid leakage and to prevent the hose from twisting. 5.When tightening the threaded pipe joint, pay attention to the appropriate tightening torque. The following table lists the allowable tightening torque. Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1Pair x Quick Connector