6 PCS Twist Drill Saw Drill Set High Speed Steel Carpentry Multi-function Metal Expansion Punch Groove Sawtooth Set Professional & DIY Use Twist Drill Bit Set

Features:
Made of high quality material with high hardness, wear resistance and more sharp.
Surface finishing grinding processing, effectively improve the hardness and wear resistance.
Sharp head design, facilitate drilling positioning, resistant to wear and tear.
Big groove design for high speed running fast chip removal.
High hardness, wear resistance and more sharp, performing well in cutting and drilling.
Ideal for DIY, home and general building and engineering using.
Suitable for thin wood(1-2mm), thin iron, plastic, aluminum sheet, etc.