Cannabis-shaped groove, when drilling work in wood, aluminum and iron chip more smoothly; precise positioning, sharp and sturdy, long life.Product description 1. When running in the counterclockwise direction (cut right), the saw-tooth groove cutter can easily evacuate the chips. 2. After sawing, burrs will appear on the edges. It is recommended to use various files and sandpaper for polishing. 3. The pointed design is convenient for drilling and positioning, and resistant to wear. Large groove design, high-speed operation, rapid chip removal. High hardness performs well in cutting and drilling. 4. It has excellent processing performance in drilling work, and all viscous milling working holes for grinding sharp ligaments are smooth and free of burrs.Product attribute Name: Sawtooth drill Material: High Speed Steel Tool holder type: round handle Specification: 3mm / 4mm / 5mm / 6mm / 6.5mm / 8mm Application: thin metal and wood boardsWarm reminder 1. Please remember that due to the lighting effects, the monitors brightness / contrast settings / etcs, there will be some slight differences in the color of the pictures and the actual items. Measured by hand, deviations of 1-2 cm are possible. 2. Please leave us a message if you have any questions. We will respond and offer you our best service.