• 【Perfect Valve Conversion Solution】Specifically designed to solve the gap and looseness issues when installing Presta valves in Shrader valve holes, ensuring secure and stable fit.
• 【Premium Construction】Made from high-quality engineering plastic material with ultra-long service life, maintaining stable performance even in harsh environments.
• 【Precision Engineered Dimensions】Precisely designed size (8.5mm outer diameter, 6.1mm inner diameter, 9mm height) perfectly fit various mountain, road, and folding bicycle rims.
• 【Enhanced Sealing Performance】Effectively reduces gaps after installation, significantly improving the firmness and sealing performance of Presta valves in Shrader valve holes.
• 【Ultra-Lightweight Design】Weighing only 0.2g per piece, the lightweight design adds no burden to the wheel, suitable for professional cycling and daily commuting.
• 【Versatile Compatibility】Compatible with mountain bikes, road bikes, and folding bicycles, making it an essential accessory for various cycling needs.

Specifications:

• Material: Engineering Plastic
• Outer Diameter: 8.5mm
• Inner Diameter: 6.1mm
• Height: 9mm
• Weight: 0.2g
• Application: Mountain bikes, Road bikes, Folding bicycles