Check the listing for details. Drill Bits Sharpener Grinder Grinding Machine 2-13mm 100-135 Angle. Condition: Used. Listed at 750.00 USD. Experience precision sharpening with the Techtongda Drill Bits Sharpener Grinder, a robust solution for maintaining sharp, bur-free edges on your drill bits. Ideal for workshop professionals and DIY enthusiasts alike, this grinding machine is engineered to accommodate drill bits ranging from 2-13mm and operates efficiently within a 100-135 angle range, ensuring optimal sharpening results. Crafted in China with meticulous attention to detail, this grinding machine is a standalone piece that doesn't require customization or modification.