These are some airbrush quick connecting fitting adapters. It is made of safe alloy material, durable to use. Quick connecting design your effort and time in screwing or unscrewing connectors frequently. Good craftsmanship, polished surface, for easy use, take and store. Features -Color:Silver. -Material:Alloy. -Size:4.50X0.32X0.32cm/1.77X0.13X0.13inch.(female and male connector) -Size:1.70X0.32X0.32cm/0.67X0.13X0.13inch.(male connector) -Note:1/8 thread type. -These airbrush adapter kits are made of safe alloy material, which feature sturdy construction and lasting performance. -Quick release airbrush connectors for airbrush and air hose, much more convenient for you. -Easy to use and install with the simple structure, you much time and energy when using -Quick and easy connection, no air leakage, compact, you can use with peace of mind. -The connector is design with the pressure adjust knob for easy adjustment, can satisfy your demands better. Package list: 4 x male connectors 1 x adjustable female and male connector