Detailed Product Description

Step Drills
1) HSS step drills bits with spiral flute, size: 4.0-12, 6.0-40
2) HSS step drills  bits with spiral flute TiALN coating, size: 4.0-12, 6.0-40
3) HSS step drills bits with spiral flute, Hex Shanks, size: 4.0-12, 6.0-40

4) HSS step drills bits with spiral flute, Hex Shanks,3pcs! size: 4.0-12, 6.0-40

Application
for drilling big hole on sheet metal

.Please feel free to contact us If you are interested in our products, We will be happy to give you our best quotation upon receipt of your detailed requirements.