It is suitable for 28" wheels with tyre widths from 35 to 50 mm.The Zefal Switch Mini is a convenient pump and easy to use thanks to the Z-Switch system, ensuring an intuitive valve change. This compact pump is also sold with a mounting clip.Aluminium: Durable, light weight and a high resistance to corrosionZ-Switch: Simple to change from Presta to Schrader or DunlopErgonomic Hand Grip: More comfortable with better gripMounting Clip: IncludedKey Features:Barrel: AluminiumPressure: 100psi/7 barThumb Lock: Thermoplastic LeverHandle: ThermoplasticConnection: Z-SwitchLength: 200mmWeight: 110g