Vevor's MR-13B Drill Bits Sharpener provides high-precision and excels at sharpening point angle and lip relief angle. The sharpener provides 95° to 135° point angle adjustment and comes with 11 collets suitable for 3-13mm drill bits and two grinding wheels (CBN & SDC). The sharpeners powerful DC motor provides 4500 RPM with strong torque, long-lasting durability, and minimal noise. Crafted from strong 45# Steel, Vevor's drill bits sharpener is built for high stability and durability.