Taper shank twist drills reduced shank drill shank drill drilling Center drill

Specializing in the production of high-medium-low taper shank twist drills with parallel shank reduced shank drill drilling Center drill double head drilling

1. provide the following materials available for customers to choose:

A：M42    B：M35    C：6542#    D：9341#

E： 4341#    F：4241#

2. the manufacturing process:

A: b fully ground: half a mill c: roll d: forging

3. surface finish:

A: white b: Black Diamond c: white black tank drilling d sanding drill e: Titanium-coated drill f: roasted yellow diamond g: color diamonds