ZVH1142 Features: * Drill grinding attachment * Extends the life of drill bits * Angle adjustments lock in to grind drill bits for more accurate drilling in a variety of materials * Automatically adjusts to give correct clearance angle * For use with ANSI, OSHA, and UL approved standard electric bench grinders or surface grinders * Equally at home in machine shop and home workshop * Angle adjustment gauge allows you to match the point angle of nearly any bit, and works on countersinks * Designed with a pivoting neck for simple grinding of both sides of the bit Construction: * Engineered to permit sharpening of drill bits to factory accuracy