Features: Premium auto locking tire chuck features copper construction with two jaw clamping mechanism, ensuring secure air hose connection during tire inflation and maintenance. Designed with 1/4" (12.5mm) threaded metal air tube (45.8cm length) and push pull auto locking systems for effortless attachment/detachment from metal pipes. Ideal for automotive technicians, diyer enthusiasts, and motorcycle repair specialists requiring reliabled tire inflation accessories. Perfect for workshop tire pressure adjustments, roadside emergencies air refills, or garage maintenance tasks with heavy duty metal components. The corrosions resistant brass chuck maintains airtights sealing through precise engineered threads, offering professional durability for frequent tire servicing applications. Specifications: Product name: Auto locking chuck trachea/2-point thread auto-locking head Dimensions: See product size chart Type: Reference picture, two option available Component:Metal Package Includes: 1pcs Quick Release Air Chuck note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.