6Pcs Cobalt Drill Bit Set Hole Saw Grooving Set Woodworking Sawtooth Drill Slotted Drill
- coating extends service life of the drilling bits.
- Suitable for thin wood, hub, aluminum, plastic plates pull grooving.
- Shorter cutting lips reduce torque while drilling in high tensile strength materials.
- Because the coating reduces friction,the drill cutter can also perform very well at even higher cutting speeds and feedrate.
