Presta Valve Stem Bicycle Tubeless Vacuum Extender Valve Adapter for MTB Road Bike

Feature: 1. Quality Material: Aluminum alloy material which has been strictly selected, for a more durable performance. 2. Silicone: Other parts are made of silicone material, corrosion resistant, enlarged base, suitable for long term use. 3. Sealing Effect: Good sealing result, no air leakage, which can extend the service time of your tire. 4. Unversal: Universal for most MTB and road bikes, with O ring to keep nut tight and protect your rims. 5. Light Weight: The weight of 6g is easy to bear and the presta valve adapter will cause less fatigue and energy waste. Specification: Item Type: Bicycle Tubeless Valve Stems Material: Aluminum Alloy + Silicone Model: VL VF40 Application: For MTB, Road Bike Product Size: Length: Approx.40mm 1.6in (Excluding Nuts) Air Nozzle Core Diameter: Approx.5.75mm 0.2in Base Diameter: Approx.12.80mm 0.5in Weight: Approx.6g 0.2oz . Package List: 1 x Vacuum Valve1 x Nut