KUU Sharpening Stone - Hard

Compact hard sharpening stone for knocking off burrs and tidying ski and snowboard edges after filing.

The KUU Sharpening Stone – Hard is a small, durable crystolon stone designed for final edge clean-up on skis and snowboards. Its hard grit is ideal for removing burrs, hardened spots and minor nicks left behind after filing, helping your edges feel smoother and more predictable on snow. Sized to fit easily in a pocket or tuning kit, it’s also great for quick detuning at the tips and tails so your edges don’t feel grabby when you roll into a turn. Whether you are tuning at home, in the car park or mid-mission, it’s a simple, reliable piece of kit that keeps your edges feeling clean and confidence-inspiring.

• Hard crystolon stone: Firm abrasive blend designed to remove burrs and hardened sections along ski and snowboard edges.
• Finishing and detuning: Ideal for the final step after filing, polishing edges and detuning tips and tails for a smoother feel.
• Compact dimensions: Roughly 3" x 3/4" x 1/4", making it easy to stash in a pocket, pouch or tuning kit.
• Rust and snag clean-up: Helps lift light rust and smooth out small nicks so edges run cleaner on hard snow.
• Includes storage pouch: Comes with a small pouch to protect the stone and keep your tuning kit tidy.
• For skis and snowboards: Suits all standard steel edges, from resort all-rounders to more performance-focused setups.