Edge Tuner Pro by Toko

Toko Adjustable Side Edge File Beveler with Steel Rollers High quality Swiss-made ICECUT metal file included (80 mm). Four steel roller bearings allow easy slide along base to protect it from edge filings. Adjustable precision side edge angles from 85-90 degrees in 1 deg increments. Accepts steel files, diamond files and stones 6 mm in thickness. Bonus Benefit for this tool: If you don't know what side angle your ski/board is set to, this tool can help you find them. Before you start mark the side edge with a sharpie, start the tool at the lowest angle and see if it removes the marking on your edge. Raise the angle step-wise and repeat until it removes the mark. That is your angle! Record the angle for future reference.