Features: Achieve quick tool changes with this durable quick release fitting set. Made of Iron Plated Nickel 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 valves built in to shut off the airs when changing between tools. Simple to use, just slide backs the collar and insert the fitting, then slide the collar fully back to lock in place. With its comprehensive ranges of fitting and compatibility with various hose sizes, this quick release fitting set offer convenience for your pneumatic needs. Specifications: Material: Iron Plated Nickel Size: As Shown In The Pictures Package Includes: 1x Female Quick Release Coupler with 1/4" BSP Male Thread 1x Female Quick Release Coupler with 1/4" BSP Female Thread 1x Female Quick Release Coupler with 3/8" BSP Male Thread 2x Male Fitting with 1/4" BSP Male Thread 2x Male Fitting with 1/4" BSP Female Thread 1x Male Fitting with 3/8" BSP Male Thread 1x Male Fitting with 3/8" BSP Female Thread 3x Male Fitting for 6mm, 8mm and 10mm hose note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.