Quality Material: pneumatic fittings with reliable pvc materials, not easy to fall off after connection; They 't break easily, and have nice sealing performance, not easy to leak; Air valve can be applied for a long time Easy Operation: after installation, you can freely change the direction of the push to connect fitting without manually inserting or pulling; They are easy installation, flexible, save space, freely rotate, release ring ellipse design, easy disassembly High Quality: These air fittings are made of high quality PVC used for automatic industry, workshop equipment, auto repair, decoration spray paint, woodworking, dental equipment, etc. size: 6mm Material: pvc colour: black Package Contents: 5 x Pneumatic Ball Valve Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.