1. 4 SPIRAL FLUTES The step drill bit is equipped with 4 spiral flutes and 4 cutting blades to ensure faster and more uniform cutting with high efficiency.
2. Excellent steel: the step drill is made of M35 high-speed steel with a surface hardness of 89 HRC and can cut harder materials.
3. DRILL DIAMETER The drill bit has a 12 step design with drill diameters of 5mm, 7mm, 9mm, 11mm, 13mm, 15mm, 17mm, 19mm, 21mm, 23mm, 25mm, 27mm.
4. Applicable plate: this step drill is suitable for wood, plastic, stainless steel, aluminium, copper and other metal plates and is extremely practical.
5. 1/4 Inch Shank:This 4 flute step drill bit is equipped with standard 1/4 inch shank, easy to install on the tool, stable and reliable.
Technical data:
Item Type: Step Drill Bit
Material: M35 high-speed steel.
Drill diameter: 5 mm, 7 mm, 9 mm, 11 mm, 13 mm, 15 mm, 17 mm, 19 mm, 21 mm, 23 mm, 25 mm, 27 mm.
Shaft diameter: 1/4 inch.
Package list:
1 x step drill.
1 x storage box.