These Roktor cobalt drill bits are the professional choice for drilling into hard, abrasive materials like stainless steel. The M35 grade steel with 5% cobalt allows the bit to maintain its hardness even at high temperatures.

Each bit features a 135° split point to ensure the bit starts exactly where you want it without slipping. These fully ground bits provide the precision and durability needed for demanding trade applications.

• 5% cobalt – stays sharp even when drilling into tough stainless steel
• 135° split point – prevents bit wandering for a more accurate start
• M35 high-speed steel – offers exceptional durability and heat resistance
• Fully ground – provides a professional-grade finish and clean holes
• Available in various sizes – ranging from 3.0mm to 13mm diameters

Delivery (UK mainland only)

 

Next Day: £5, or FREE over £40

- Order by 9pm Mon-Thu: next working day

- Order Fri to 5pm Sun: Monday

- Order after 5pm Sun: Tuesday

 

Pre-12pm: £10

- Same cut-offs as Next Day above

 

Saturday & Sunday: £10, or £5 over £40, or FREE over £75

- Saturday: order by 6pm Fri

- Sunday: order by 4pm Sat

 

Heavy items (over 30kg)

- Mon-Fri only. Order by 6pm and allow up to two working days

- Order after 6pm Thu: arrives after the weekend

 

Supplier items

- Sent directly by the supplier, so timings vary. Lead times appear on the product page in working days (Mon-Fri)

 

More about delivery 

Next Business Day Collection (eligible items)

- Order by 9pm Mon-Thu: collect next day

- Order after 9pm Thu to 5pm Sun: collect Monday

- Heavy items (over 30kg): allow up to two working days

 

Opening hours

- Weekdays vary by branch: open 6:30am-7am, close 6pm-8pm

- Saturday: 7am-6pm

- Sunday: 9am-4pm

 

Check your local store's hours and that it's open before visiting. Please wait for our text or email before collecting.

 

Holding your order
We'll hold it for 14 days, then automatically refund your original payment method.