This injection tool is specially designed for repairing vacuum tires of bicycles, it injects tire sealant into the air nozzle to avoid soiling the air nozzle while keeping your hands clean.Specifications: Material: Plastic, Aluminum Alloy Type: Tubeless Sealant Injector Optional Type: Injector, Injector Set Injector Size: 19cmx9cm/7.48"x3.54"Note: 1. All dimensions are measured by hand, there may be 2-3 cm deviations;2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Contents 1 x Tubeless Sealant Injector Or1 x Injector SetPromise: If the product has any quality problems, please feel free to contact us, we will help you solve the problem as quickly as possible.