Mini 4WD 520 Bearing Polishing Compound WRC (Wide Range Compound) Capacity: 10g Includes original logo sticker This polishing compound is a blend of several polishing compounds developed and sold for other purposes. It has been specifically formulated and judged to be suitable for polishing 520 bearings used in Mini 4WD rollers, achieving both smooth roller rotation and ease of use. Advantages: The polishing compound dissolves in water, allowing for dilution and adjustment of the polishing speed. The polishing compound dissolves in water, making it easy to clean. Prevents roller detachment due to excessive pressure removal. Bearings that would otherwise be discarded can sometimes be restored to use through polishing. Disadvantages: Excessive polishing can lead to bearing damage. Bearings after polishing lack oil, requiring more frequent lubrication. No discounts available. The container shown in the first image will be sent in an envelope. Please contact us before purchasing multiple items. Information about WRC is available on "X". If you're interested, search for "I want rollers that spin."