1. Material: stainless steel2. Application: compatible with American standard valves on cars, motorcycles, electric vehicles, bicycles, and more3. One-piece molding, compact and practical4. Key ring design on the end of the wrench can be used as a keychain5. Length: 51.8mm6. Weight: 24gValve core wrench instructions:1. Remove the valve cap and carefully insert the valve core wrench into the Schrader valve.2. Align the valve wrench with the valve core and turn counterclockwise to remove the valve core (clockwise tightens it).