Restore Blades to a Factory Flat Edge using our Preset Blade Guide to maintain the proper angle for the best cut and edge life. By replacing traditional grinding wheels the RBG 712 will reduce your work time while eliminating grinding wheel dust and wheel dressing. The unique design will allow you to grind any length of cutting edge required for both Standard Right-Hand and Reverse Left-Hand Rotation Flat Blades and with the addition of the optional grit collector you can maintain a cleaner and safer shop while sharpening blades. 1/2 H.P 7" Disc Wheel. For Replacement Disc Wheel use our 32-11710.**