Product Description: The new RBG 934 brings more power and more speed to your shop while providing all the benefits of the RBG 712. It features a 3/4 H.P., continuous duty, fan-cooled motor the RBG 934 is ready to meet your commercial needs, and with a larger 9 inch disc wheel your sharpening time will decrease even more than before. Designed to sharpen any length of standard or reverse rotation straight blades this grinder will give you a factory flat edge using our preset blade guide to maintain the proper angle for best cut and edge life.