Save time and money...sharpen your own mower blades! 1/2 Horsepower Standard Duty 1725 RPM Motor with Specially Designed Reversing Switch. Arbour Mounted 8" Hardened Ruby Wheel. Fast bevel adjustment, Grinds right or left handed lawn mower blades, Sharpen standard and mulching mower blades (with optional mulching blade kit), Steel work table, Guarded wheel, Designed to be the highest quality lawnmower blade grinder available with economy in mind. Suggested List $549.00 1 Year Manufacturer Warranty.