You can use one drill for diferent aperture
No need of center punch.Compared with the ordinary twist drill,it is not easy to break and it can be used for deburring, chamfering and open hole
Recommend the drilling speed of 250--400 rpm
Specifications:
Material:HSS6542
Shank Type:Triangle shank
Type:Spiral groove
4mm to 32mm 15 Steps
(4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm,32mm)
4mm to 12mm 9 Steps (4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm)
4mm to 20mm 9 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm,18mm,20mm)
- Easily drills on iron sheets, stainless steel sheets(under 1mm! ), steel sheets as well as aluminum sheets.RevolutionarySuit for use in hardness under 28 artifacts,(Such as: Stainless steel(under 1mm!) , iron plate, aluminum, wood )
- You can use water to cooling it when it is work and it can be used for even longer
- Meet Your Demands - With the step drill bits we offered, you can process different kinds of diameter holes, which greatly saves you a lot of trouble.Great for metal wood plastic countersunk. Suitable for Home DIY, and General Building Engineering Use.
- M2 High speed steel makes it last longer than others, ensures easily cut through stainless steel sheets, aluminum sheets, copper & plastic & wood board and many other types of sheet metal with ease, and it can automatically deburr holes while drilling to keep the drill bit clean.
- 4mm to 32mm 15 Steps ,4mm to 12mm 9 Steps .4mm to 20mm 9 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm,18mm,20mm)
- Easily drills on iron sheets, stainless steel sheets(under 1mm! ), steel sheets as well as aluminum sheets.RevolutionarySuit for use in hardness under 28 artifacts,(Such as: Stainless steel(under 1mm!) , iron plate, aluminum, wood )
- You can use water to cooling it when it is work and it can be used for even longer
- Meet Your Demands - With the step drill bits we offered, you can process different kinds of diameter holes, which greatly saves you a lot of trouble.Great for metal wood plastic countersunk. Suitable for Home DIY, and General Building Engineering Use.
- M2 High speed steel makes it last longer than others, ensures easily cut through stainless steel sheets, aluminum sheets, copper & plastic & wood board and many other types of sheet metal with ease, and it can automatically deburr holes while drilling to keep the drill bit clean.
- 4mm to 32mm 15 Steps ,4mm to 12mm 9 Steps .4mm to 20mm 9 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm,18mm,20mm)
