Check the listing for details. 3-13mm Drill Bit Sharpener Grinder with 11 Collets & Precision Adjustment. Condition: New, Made in China. Listed at 334.99 USD. Accurate, stable, and easy to use. Robust CBN grinding wheel is used for high speed steel material to optimize efficiency. Lightweight and user-friendly, our drill bit grinder sharpener is mainly constructed with 45# steel material for improved stability and durability.