Hexagon shank straight groove step drill tower step drill bit reaming drill set

[product name]Hexagon handle straight groove step drill

[commodity unit] 1

[commodity packaging] OPP

【 commodity material 】High speed steel4241

[product color] gold

[product size] 4-32 mm(4.6.8.10.12.14.16.18.20.22.24.26.28.30.32 mm)

                     4-20 mm(4.6.8.10.12.14.16.18.20 mm) 

                     4 to 12 mm(4.6.8.10.12 mm) 

[product weight] more specific size, please consult customer service

[packing quantity]Please consult customer service for more specific sizes

[product volume]Please consult customer service for more specific sizes

Hexagon handle straight groove step drill

1, unique ladder structure, a drill can open a variety of sizes of aperture, a ladder drill on a box of drill.

2, do not need to use center punch, and common twist drill is not easy to break. Site construction, a ladder drill for a variety of specifications.

3, deburring, chamfering, elliptical hole expansion, twist drill can not complete the function it became possible.

4, compared with ordinary twist drill. Small shaking, do not need to lead the use of center punch can also open out beautiful aperture.

5Tools: hand drill, bench drill. While working, water injection and cooling can effectively extend the service life of the bit, and the drilling speed is recommendedThe 250-400Turn.