This Sale is for 10 of any 1 (Pack of 10) of the drill sizes listed below
Please select the size required
10pc Cobalt Twist drill bit set 1mm 1.5mm 2mm 2.5mm 3mm
3.2mm 3.5mm 5.0mm 6.5mm 7mm

This sale is for one pack of 10 drill bits all the same size each pack contains 10 drills i.e. all 1mm or all 1.5mm or all 2mm etc
The drill bits come with a storage box
Suitable for most hardened metals, including bronze, cast iron, stainless steel and titanium.

Important Note

We use the Royal mail to send all small parcels. We send all items purchased before 4:00pm on the same day as purchase and the 1st available post after this time. eBay give you as a customer an ESTIMATED delivery of 3 Day’s but this is not Guaranteed! The Royal Mail give an Estimated delivery of 5 working Day’s not including weekends. A 1st class service is available at checkout if urgent at an extra cost and we have no control over the service the Royal Mail provide, it can take over 1 week to arrive.


Drill Size: 1mm
Drill Material : DIN 338RN
Overall Length : 34mm
Working Length 14mm

Drill Size: 1.5mm
Drill Material : DIN 338RN
Overall Length : 40mm
Working Length 16mm

Drill Size: 2mm
Drill Material : DIN 338RN
Overall Length : 49mm
Working Length 24mm

Drill Size: 2.5mm
Drill Material : DIN 338RN
Overall Length : 57mm
Working Length 30mm

Drill Size: 3mm
Drill Material : DIN 338RN
Overall Length : 60mm
Working Length 38mm

Drill Size: 3.2mm
Drill Material : DIN 338RN
Overall Length : 65mm
Working Length 45mm

Drill Size: 3.5mm
Drill Material : DIN 338RN
Overall Length : 70mm
Working Length 48mm

Drill Size: 5.0mm
Drill Material : DIN 338RN
Overall Length : 85mm
Working Length 65mm

Drill Size: 5.5mm
Drill Material : DIN 338RN
Overall Length : 90mm
Working Length 65mm

Drill Size: 6.5mm
Drill Material : DIN 338RN
Overall Length : 110mm
Working Length 85mm

Drill Size: 7.0mm
Drill Material : DIN 338RN
Overall Length : 110mm
Working Length 85mm


Heller: Heller is a world-renowned specialist for professional drilling. As an expert for the development, production and marketing of drill bits for any application, Heller is the preferred choice of professionals on building sites and throughout the industry. Heller drills are made in Germany

Why Use Cobalt Drills
Cobalt drill bits are incredibly strong. They can be operated at much higher speeds than a standard HSS drill bit. The ability to withstand heat means that cobalt bits perform for long periods without cooling or the need for cutting fluid.

They are most often used to cut through hardened and abrasive materials. Cobalt bits are able to cut through the most hardened metals, including bronze, cast iron, stainless steel and titanium. They are also able to cut through weld seams.

Advantages over HSS Drill bits

HSS bits are hardwearing and heat resistant. The large concentrations of chrome and nickel in stainless steel ensure that HSS bits are super strong and durable. HSS drill bits are capable of safely drilling through hardwood, some metals and plastic. They’re safe to operate at high speeds (RPM) and provide long-lasting performance – as long as they are maintained.

Over time, HSS drill bits can become blunt and need to be sharpened, which demands specialist tools that aren’t always available. If you’re using HSS drill bits for long periods or at high RPMs, you may need to use cutting fluid to keep the bit cool. HSS drill bits are generally used in the DIY Market for softer materials like soft metals wood and plastics.