Drillpro 3-12/4-20/4-32mm M35 Cobalt Step Drill Bit 1/4 Inch Hex Shank HSS-Co Step Drill Bit

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Size: 3-12mmSize Guide

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About this item
Drillpro 3-12/4-20/4-32mm M35 Cobalt Step Drill Bit 1/4 Inch Hex Shank HSS-Co Step Drill Bit


Brand Drillpro
Material HSS-Co M35 Cobalt
Coating                Cobalt coating

Model Step Size Shank Type
3-12mm 9 3,4,5,6,7,8,9,10,12mm 1/4 Inch Hex
4-20mm 9 4,6,8,10,12,14,16,18,20mm 1/4 Inch Hex
4-32mm 15 4,6,8,10,12,14,16,18,20,22,24,26,28,30,32mm 1/4 Inch Hex

1. High-speed steel cobalt / M35 (Suitable for Aluminum, insulation board, PVC board chamfer,steel, aluminum, sheet metal, carbon steel, 304 stainless steel, etc.)
2. Industrial-grade cobalt plating (More than 4241and 6542 high-speed steel materials, live longer!)

1. CNC CNC, CBN grinding wheel.
2. 118° X Bit Design, you can drill from any angle, no slipping.
3. New flute design, great chip removal, small resistance, geat heat dissipation.
4. Higher accuracy sharper achieve drilling burr.
5. Plated cobalt coating, a substantial increase in the wear resistance and oxidation resistance.
6. 1/4 Inch hex shank: Ensure that the tool concentricity.
7. Ideal for cutting through metal, wood and plastic quickly and easily.

Package Included:
1 x Step Drill Bit

More Details:

Additional Information

3-12mm, 4-20mm, 4-32mm

Shipping information

(1) FREE Shipping 10 - 15 business days, (2) Standard Shipping 7 - 12 business days.

Shipping and Delivery Estimates

We ship in-stock orders as soon as possible. This is often within two business days, but there are situations where it may take longer. All estimates are based on business days.


(1) The shipping time mentioned above refers to the estimated time of business days that the shipment will take after an order has been shipped.

(2) Business days do not include Saturday/Sunday and any public holidays.

(3) These estimates are based on normal circumstances and are not a guarantee of delivery times.

(4) We are not responsible for the failures or delays in delivery resulting from any force majeure event, such as natural disaster, bad weather, war, customs issues, and any other event beyond our direct control.

Return and exchanges

Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can't offer you a refund or exchange. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

for more information please visit our Refunds & Returns Policy page.