Features: The air chuck is made of stainless steel and copper, durable and long service life This item is a specially designed air chuck that locks onto the cap threads of a Standard Bore stem The sliding sleeve is pushed to the forward position The chuck releases when the sleeve is pulled back Available for use with tire changers and auto tire inflators Package Includes: 1 Set Air Chucks Specifications: Material: Stainless Steel+Copper Length: 61mm/2.4 inch Inner Diameter: 5mm/0.19 inch note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you place order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! The air chuck is made of stainless steel and copper, durable and long service life This item is a specially designed air chuck that locks onto the cap threads of a Standard Bore stem The sliding sleeve is pushed to the forward position The chuck releases when the sleeve is pulled back Available for use with tire changers and auto tire inflators