Used for concrete cleaning and preparation for overlays and coatings, the BGS-250 grinder can also be used for the removal of mastics, epoxies, urethane, paint, and other coatings. It features a compact design with a low horsepower motor for small to medium surface preparation jobs. The grinder is equipped with a 110 V, 15-amp motor that allows operators to use the machine indoors with a household electrical circuit. Blastrac. 800-256-3440.