The KUU Coarse (325 grit) Diamond Stone is built for aggressive edge work, removing damage, cutting back hardened burrs, and bringing dull edges back into shape fast. When your edges are blown out or inconsistent, this is where you start.

At 325 grit (approx. 45 micron), it delivers serious cutting power, designed to quickly restore sharpness and re-establish edge geometry before moving to finer stones . It’s not about finesse, it’s about building a clean, consistent foundation that everything else depends on.

Durable diamond construction ensures consistent performance over time, maintaining its bite across repeated tunes without loading up or losing effectiveness. Compact at 23mm x 80mm, it’s precise enough for controlled workshop use and small enough for quick fixes on the hill.