Description: Open air chuck: Open air chuck at the air inlet, up to 300 psi. Strong material: Made of high quality brass with good corrosion and wear resistance. Strong accessories, not easy to break, durable. Easy installation: When you want to work with enclosed spherical pneumatic chuck, press the lock clamp, push the pneumatic chuck into or screw into the valve stem until the clamp is tight, and release the lock clamp. Package includes: Pneumatic chuck with 1 connector, scientific combination for easy use by most people. Application: For commercial sites, auto stores, home garages, etc. Specifications: Product name: Tire inflation chuck Material: Copper Size: Rat tail 6mm, 8mm Package Included:1x Tire inflation chuck Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you 2. Please allow 0.1-2cm measuring deviation due to manual measurement.