6PCS Titanium-Plated Step and Serrated Drill Bits Set the Perfect Tool for Woodworking Hole Opening and Slotting
Features:
- The ladder of its unique structure, a bit can open a variety of specifications of aperture.
- Do not need to use center punch, compared with the ordinary twist drill is not easy to be broken.
- Deburring, chamfering, elliptic hole enlargement, twist drill, the function of them was unable,but it is possible.
- The use of tools: drill, bench drill.Work while water cooling, can effectively extend the service life of drill bit, recommend drilling rate of 250-250 RPM.
Specification:
Material: HSS(High Speed Steel)
Shank: Hex Shank/triangle shanke
Shank Dia: 6mm
Shank Length: 30mm
Overall Length: 110mm
Size: 6-35mm( 6-8-10-12-16-18-20-22-25-28-30-32-35mm) 13 Step
| order no. | type | groove | steps | each step shk | shk | CEL | color |
|---|---|---|---|---|---|---|---|
| 305044125 | HSS 4241 4-12mm |
straight | 5 | 7mm | 6mm | 42mm | gold |
| 30504420 | HSS 4241 4-20mm |
straight | 9 | 4.5mm | 8mm | 52mm | gold |
| 30504432 | HSS 4241 4-32mm |
straight | 15 | 4mm | 10mm | 78mm | gold |
| 305034125 | CO M35 4-12mm |
straight | 5 | 8mm | 6mm | 43mm | cooper |
| 30503420 | CO M35 4-20mm |
straight | 9 | 4.5mm | 8mm | 52mm | cooper |
| 30503432 | CO M35 4-32mm |
straight | 15 | 4mm | 10mm | 78mm | cooper |

About US
CHANGZHOU AMG PRECISION TOOL MANUFACTURING CO., LTD. specializes in producing tungsten solid carbide end mills, drill bits, reamers, TCT saw blades, and welded cutting tools for CNC machining. AMG Precision also designs and manufactures various types of customized carbide tools tailored to specific customer requirements.
Our company uses premium domestic and imported carbide rods, combined with advanced German manufacturing technology, to produce high-quality cutting tools. By integrating superior raw materials with precision-engineered equipment, AMG delivers reliable and consistent products that meet even the most demanding machining standards.
We sincerely welcome both new and existing customers to contact us for inquiries and cooperation opportunities. Let AMG provide the perfect cutting solution for your specific machining needs.
AMG is committed to enhancing productivity, reducing production costs, and solving complex cutting challenges with uncompromising machining quality. We proudly serve the manufacturing industry with innovative and high-performance cutting tool solutions designed to meet global industrial demands.



1.Are you factory or trading company?
Yes, we have factory. We are professional manufacturerwith 20 years of production experience. Besides, we also do some trading.
2. Is free shipping possible?
We don’t offer free shipping service, but we will give you some discount if you buy large qty products.
3.Can you send products to our Forwarder in China?
Yes, if you have forwarder in China, I will glad to send products to him/her.
4.Do you make OEM?
Yes, we do. We have laser machine, can laser your logo and sizes on the body of milling cutter, also can print labels.
5.How about the delivery time?
According to the sizes and quantity, delivery time is different. Usually 3~7days. We can tell you exact inventory state if you need.

Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.