Practical and : the air chuck is made of quality brass, strong and to use, not easy to deform or damage, and can you for a long time, the maximum pressure is up to 250 PSI, which is applied for tire inflators and pressure gauges Open flow design: the open flow straight tire chuck with clip is designed for slowly inflating, with a valve inside, and the open flow design allows air to flow even when not engaged to a valve stem Connector type: the brass air chuck is suitable for 1/4inch female NPT, 3/4inch hexagon, rotary installation, suitable for most tire inflators, wheel pressure gauges, compressors, etc. the tyre chuck head is suitable for the inflation nozzles of most vehicles Locking clamp: when using an air chuck to inflate the tire or measure the pressure, you use the locking clip to fix the chuck to the valve stem to a seal, easy to fix, simple to operate, and convenient to use, widely applicable in your life Sufficient quantity: there are 12 pieces air chucks in total, and sufficient quantity can meet most of your needs, suitable for trucks, buses, cars, bicycles and motorcycles, bring more convenience in your life Colour: silver+copper color Material: brass Package Contents: 12 x Brass Air Chuck Note: Due to different production batches, product colors and pictures may be different 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.