The TOOPRE Rim Conversion Nut Set is a lightweight bicycle valve accessory kit made from aluminum alloy with CNC-machined anodized finishing. Designed for mountain bikes, road bikes, and general bicycles, it helps improve valve fit and reduce excess clearance around compatible rim valve holes. Each set includes 2 conversion nuts, 2 sealing rubber rings, and 1 multi-function wrench for valve core, extension rod, and nut installation or removal. With a total weight of approximately 5.25g, it is a compact and practical addition to any cycling repair kit.