Ideal start pack of quick release fittings. Compatible with PCL, Vertex, Airflow, Rectus 19 fittings etc..... Made of heat treated hardened steel for strength and durability. Zinc plated finish for rust and corrosion resistance. Spring loaded quick release couplers for use on the compressor side have a valve built in to shut off the air when changing between tools. Simple to use, just slide back the collar and insert the fitting, then slide the collar fully back to lock in place. Enables tools and airlines to be quickly connected / disconnected. Includes (as pictured) 1 x Female Quick Release Coupler with 1/4" BSP Male Thread. 1 x Female Quick Release Coupler with 1/4" BSP Female Thread. 1 x Female Quick Release Coupler with 3/8" BSP Male Thread. 2 x Male Fitting with 1/4" BSP Male Thread. 2 x Male Fitting with 1/4" BSP Female Thread. 1 x Male Fitting with 3/8" BSP Male Thread. 1 x Male Fitting with 3/8" BSP Female Thread. 3 x Male Fittings for 6mm, 8mm and 10mm hose.