1. High-quality long rubber extension tube, thickened tube body, explosion-proof and crack-proof, and bend freely. 2. Built-in American valve core, strong sealing, pure copper material, high strength, not easy to aging, and more stable performance. 3. The head is made of copper, which is solid and durable. 4. Scope of application: cars, battery cars, bicycles, balance cars, scooters. 5. Specifications: outer diameter: 10mm, inner diameter: 5mm
