DRILL SHARPENER" DRILL DOCTOR IS MADE BY USA, A POWERFULL MOTOR FOR SMOOTH OPERATION AND A DIAMOND GRINDING WHEEL PROVIDING LONG LIFE & CONSTANT GEOMETRY WITHOUT THE NEED FOR WHEEL DRESSING.SUITABLE FOR SHARPENING HIGH SPEED STELL, MASONRY, TIN COATED, CARBIDE, COBALT, SPLIT POINT& PARABOLIC TWIST DRILL