• Changzhou Ruilida Tools Co., Ltd.
    Customer B
    Now I enjoy our work. Only buy your end mills. Not so much, but only you.
  • Changzhou Ruilida Tools Co., Ltd.
    Customer R
    Today I tested 50HRC 3 flutes end mill for aluminum. It was very very good. Cuts very good. It barely makes a sound.If you stop watching the machine, you cannot say it is cutting.
Contact Person : Jane
Phone Number : 86-13685240516
WhatsApp : +8613685240516

.635" .0625" 1/8" 1/4" 1/2" Solid Carbide Step Drill Bit for Steel Aluminium 1/16" 6mm 2mm

Place of Origin China
Brand Name RLD Tools
Model Number DR
Minimum Order Quantity 1
Price 10-80USD/negotiable
Packaging Details One piece end mill in a plastic tube, ten pieces a bundle, then in carton.
Delivery Time 5-8 work days
Payment Terms T/T/PayPal/Credit Card
Supply Ability 1000pcs/month
Product Details
Brand RLD Coating Uncoated/customized
Type Carbide Step Drill Bit Material Carbide
Diameter Customzied Overall Length Customized
Suitable For Aluminium, Steel, Stainless Steel, Iron, Cast Iron, Etc Precision Within 0/-0.01mm
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1/2 Solid Carbide Step Drill Bit


Carbide Step Drill Bit 6mm


.635" Solid Carbide Drill Bit

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Product Description

.635" .0625" 1/8" 1/4" 1/2" Solid Carbide Step Drill Bit 1/16" 1/8" 6mm 2mm


This is the customized step drill bit. 

Our company usually produces carbide drill bit according to your drawings.

We also can choose the suitable raw material and coating for you according to your application. 

All of our drill bits are produced by grinding machines. 

Precision can be assured. 


Product name Solid Carbide Step Drill Bit
Feature Within 0/-0.01mm
Suitable for   Steel, stainless steel, iron, cast iron
Machine type CNC milling machine 
Flutes Customized
Coating  Customized 
Helix Customized
Co 10%
HRC 50/55/60/65
TRS Min(N/mm²) 4000
Tolerance Customized
Processing machine ANCA/ 

                                             Carbide Raw Material Introduction

End mill grade Carbide rod Grain size HRA Application
HRC50 YG10X 0.6μm 91.8

Aluminum, iron, low alloy steel,

general steel under hardness HRC45

HRC55 WF25 0.6μm 92.2 Cast Iron, Alloy Steel, General steel under hardness HRC50
HRC60 GU25UF 0.4μm 92.5 Super Alloy Steel, Stainless Steel, Titanium, Inconel, Hardened Steel under hardness HRC55
HRC65 GU092 0.2μm 93.5 Alloy Steel, Hardened Steel under hardness HRC62

                                                            Coating   Introduction 

Coating name Color Thickness Hardness Friction The Max ℃
AlTiN Black 1.5-3 3300 0.4 900
AlTiSiN Copper 1.5-3 3500 0.35 1000
TiAlN Dark Violet 1-3 3000 0.4 800
Blue Nano Blue 2-4 3200 0.45 1000
AlCrN Dark grey 1.5-3 3500 0.3 1250
DLC Black 1-3 1800 0.1 350
Diamond Black 2-12 10000 0.02-0.1 650
Coating also can be customized according to your requirement.

.635" .0625" 1/8" 1/4" 1/2" Solid Carbide Step Drill Bit  for Steel Aluminium 1/16" 6mm 2mm 0.635" .0625" 1/8" 1/4" 1/2" Solid Carbide Step Drill Bit  for Steel Aluminium 1/16" 6mm 2mm 1
1. Are you a manufacturer or trading company?

We are a professional manufacturer of carbide tools which established in 2011.

2. Which CNC grinding machine do you use?

All of our carbide tools are produced by ANCA & machine.

3. Which shipping method do you usually use?
We usually send goods by express like FedEx, UPS, DHL, TNT, EMS, ETC.

4. How about the delivery time?
For stock items, we can dispatch within 2 business days after receiving payment.
For the out-of-stock items, it depends on the quantity.
Usually is around 5-7 business days.
5. Which payment methods do you accept?
We accept T/T, Trade Assurance Order on Alibaba(credit card), PayPal, etc.
6. Do you attend international exhibitions?

Yes, we had attended exhibitions in Indonesia, India, Russia, Thailand, Vietnam,

Brazil, etc.