A revolutionary new tool, the RaceWax Dual Edger is everything you need to professionally sharpen ski and snowboard edges; both base and side. There are several pairings with diamond stones and gummis that are smart buys.
The RA-5820 or ZL-7058 kit are best for Magne-Traction or Lib Tech edges.
At a minimum add either the black/blue RaceWax diamond stones or the red/yellow Swix or Moonflex (best) for routine edge sharpening. Check that stone is proper size for edge tool. The RaceWax Dual Edge tool accepts 70 mm and 80 mm (max) diamond stones.