Suitable for both mountain and road applications. FEATURES: Includes 2 x Tubeless Valves, 2 x Narrow Round Bases, 2 x Wider Round Bases, and 2 x Square bases to fit different rim profiles, Spare Alloy Valve cap with integrated valve core remover Installs securely with a 4mm fitting for a hex wrench of the valve and a 10mm wrench flat on the nut SPECS: Material: Aluminum Length (mm): 44 or 60 Valve: Presta