Free Grinder w/ Qualifying Wheel Purchase Home › United Abrasives Sait › Free Grinder w/ Qualifying Wheel Purchase We currently do not have any products for this manufacturer. Please check back soon for new products... If you would like to place an order over the phone please call 800-242-4424 for immediate assistance. Thank you. Ohio Power Tool will be giving away a free Milwaukee grinder with a qualifying purchase of United Abrasives cutting wheels. Check out the list of available packages here. United abrasives wheels are great for general purpose, low cost cutting and grinding. They combine a low price point with high durability and a long lasting wheel.