12pcs Quick Release Air Line Hose Connectors 1/4 BSP Description: Made of metal for strength and durability. Rust and corrosion resistant. Spring-loaded quick-release couplers for compressor-side use have a built-in valve to shut off air when changing tools. Easy to use: simply slide the connector back and insert the fitting, then slide the coupling fully back to lock it into place. Allows tools and air lines to be connected/disconnected quickly. Specification: 2-piece female connector with 1/4" BSP male thread. 4-piece 1/4" BSP male thread connector. Size Chart: Size: approx. 65x15mm / 2.6x0.6 inches. Package includes: 12-piece air line hose compressor fitting connector. Note: Please allow 0.5-1 inch difference due to manual measurement (1 inch = 2.54cm). Please check the size measurement and picture carefully before making payment. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you.