Nickel-plated or chrome-plated, corrosion-resistant and rust-proof self-locking design for convenient use. Reduces accidental airline disconnection. Pneumatic quick coupling designed for air piping and pneumatic tools. Allows quick connection and disconnection without tools. Spring-loaded quick release couplers retain air in the compressor when the tool is disconnected. To use, slide back the sleeve, insert the connector, then release the sleeve to lock. Compatible with pneumatic pipe connections, air compressors, grinders, air drills, impact wrenches, pneumatic screwdrivers, and other pneumatic tools. Specifications: Item Type: Quick Connector Material: Metal Size: SH total length: 66.8mm, PH total length: 52.8mm Color: Silver Optional Type: 2020, 3030, 4040 Quantity: 1 Pair Warm Tips: Ensure proper spatial positioning during hose installation to avoid mechanical interference. Use compressed air to clean hose and joints before connection. Keep wiring neat, grouped, and labeled for easy inspection. Consider operating environment temperature as it affects hose pressure resistance and reliability. Avoid excessive hose length to minimize air pressure loss. Maintain minimum curvature radius and avoid tight bends near joints to prevent leakage and twisting. Apply appropriate torque when tightening threaded joints. Note: No retail packaging included. 1cm = 10mm = 0.39inch. Allow 0–1cm measurement variation due to manual sizing. Product color may vary slightly due to monitor differences. Package Includes: 1 Pair x Quick Connector