Quantity: 2 pieces Material: brass Dimensions: 4 x 1.8 x 1.3 cm Leak-Free Air Chuck: Air chuck with clip adapter; just press the locking clip, push or twist the air chuck into the valve stem until tight, then release the locking clip. No other tools are needed, making it convenient and practical. The tire inflation chuck provides a secure seal on the tire valve and serves as an effective air inflation hose adapter. Universal Mounting Accessory: One end features an 8mm diameter design, making it suitable for hose repairs and compatible with 8mm bore hoses. Fits a wide range of vehicle tire inflators, including bicycles, motorcycles, and car tires. Premium Material: Wheel chucks are constructed from heavy-duty solid brass for enhanced strength and durability. The high-quality material offers excellent corrosion and wear resistance, with a maximum pressure rating of up to 250 psi. Easy to Use: No additional tools required. Simply insert the open-flow air chuck into the pipe, attach it to the valve stem, and it stays securely in place. Compatible with standard quick connectors for inflation. Note: Metal tire chuck, portable tire inflator chuck adapter, suitable for bicycles, motorcycles, and cars. Confirm compatibility with your inflation system before purchase.