Tune, De-Tune, Re-Tune. Ask anyone who has attempted to sharpen their edges without one, and you'll quickly understand the importance of a file guide to the whole tuning equation. Our wider snowboard-specific guide makes getting the right angle easy. This tool will prevent mistakes and keep your board running smoothly. Sharpening file and polishing ceramic stone included. Features: Choose the Angle Even if you're not good with numbers, it's simple adjustability offers an 87-to-90-degree side-edge and 0-to-3-degree base-edge tune. Tech Specs: Warranty: 1-Year Warranty Burton File Guide