Factory wholesale 4 Inch Step Drill Bit - Carbide Twisted Drill Bits Ideal for machining most steels – MSK
Factory wholesale 4 Inch Step Drill Bit - Carbide Twisted Drill Bits Ideal for machining most steels – MSK Detail:

1.Designed for drilling abrasive materials when drilling accuracy must be maintained
2.Can be used in high temperature drilling applications
3.Used on materials such as cast iron, non-ferrous alloys, high silicon aluminum, copper, plastics, bronze, hard rubber, plexiglass, and other similar materials
4.Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle
5.Must be used with a rigid tool-holding systems.

| Handle type | Straight handle |
| Workpiece Material | Ordinary steel / high hardness steel / cast iron / aluminum / copper / graphite / resin |
| Tool material | carbide alloy |
| Coating | Yes |
| Oil holes | No |
| Brand | MSK |
Advantage:
1.Excellent quality with competitive price.
2.Short delivery date within one week.
3.We can provide custom tools as per customers’need.from coating,flute,Helix angle,to cutting length,total length.
4.Heavy duty operation end mills-Unequalled Indexing,Asymmetric helix angle.
5.Anti-Vibration,Providing smooth and steady chip evaluation.
| Flute Diameter D | Flute Length L1 | Shank Diameter d | Length L |
| 4.0 | 24 | 6 | 66 |
| 4.5 | 24 | 6 | 66 |
| 5.0 | 28 | 6 | 66 |
| 5.5 | 28 | 6 | 66 |
| 6.0 | 28 | 6 | 66 |
| 6.5 | 34 | 8 | 79 |
| 7.0 | 41 | 8 | 79 |
| 7.5 | 41 | 8 | 79 |
| 8.0 | 41 | 8 | 79 |
| 8.5 | 47 | 10 | 89 |
| 9.0 | 47 | 10 | 89 |
| 9.5 | 47 | 10 | 89 |
| 10.0 | 47 | 10 | 89 |
| 10.5 | 55 | 12 | 102 |
| 11.0 | 55 | 12 | 102 |
| 11.5 | 55 | 12 | 102 |
| 12.0 | 55 | 12 | 102 |
| 12.5 | 60 | 14 | 107 |
| 13.0 | 60 | 14 | 107 |
| 13.5 | 60 | 14 | 107 |
| 14.0 | 60 | 14 | 107 |
| 14.5 | 65 | 16 | 115 |
| 15.0 | 65 | 16 | 115 |
| 15.5 | 65 | 16 | 115 |
| 16.0 | 65 | 16 | 115 |
| 16.5 | 73 | 18 | 123 |
| 17.0 | 73 | 18 | 123 |
| 17.5 | 73 | 18 | 123 |
| 18.0 | 73 | 18 | 123 |
| 18.5 | 79 | 20 | 131 |
| 19.0 | 79 | 20 | 131 |
| 19.5 | 79 | 20 | 131 |
| 20.0 | 79 | 20 | 131 |
Use:

Aviation Manufacturing
Machine Production
Car manufacturer

Mold making

Electrical Manufacturing
Lathe processing
Product detail pictures:
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We have been also concentrating on enhancing the things management and QC method so that we could preserve terrific edge inside the fiercely-competitive enterprise for Factory wholesale 4 Inch Step Drill Bit - Carbide Twisted Drill Bits Ideal for machining most steels – MSK , The product will supply to all over the world, such as: Mexico, Leicester, Benin, As an experienced manufacturer we also accept customized order and we could make it the same as your picture or sample specification. The main goal of our company is to live a satisfactory memory to all the customers, and establish a long term business relationship with buyers and users all over the world.
Good quality and fast delivery, it's very nice. Some products have a little bit problem, but the supplier replaced timely, overall, we are satisfied.