Box Of 10 Cobalt Jobber Drills Sizes 6.6mm - 13mm For Hard Metals, Stainless Steel

When it comes to drilling into hard or tough metals, you need a tool that delivers performance and durability. At Rennie Tools, we supply a premium cobalt jobber drill bit set designed specifically for professionals and serious DIY users who need reliable results. This set of 10 cobalt jobber drills is ideal for tackling the most challenging materials such as stainless steel, Cr-Ni alloys and acid-resistant steels.

Dimensions

Why Choose Cobalt Drill Bits?

Drilling into metal places unique demands on cutting tools. Standard drill bits often overheat, wear down quickly, or lose their sharpness. That’s where cobalt drill bits come in. Engineered for superior toughness and heat resistance, cobalt alloys extend the life of each bit while ensuring faster, cleaner penetration through hard materials.

Our cobalt drill bits for metal are made from M35 high-speed steel, with 5% cobalt. This provides exceptional hardness, making them a top choice when choosing a jobber for drilling metal. The cobalt content increases wear resistance and also allows the bit to withstand extreme temperatures without softening or losing performance.

Features of Rennie Tools Cobalt Jobber Drills

Every set of cobalt jobber drills we sell is manufactured to DIN338 standards and fully ground from solid material. This ensures dimensional accuracy and consistent quality with a long working life. Each drill features:

• High heat resistance for extended drilling without cooling fluids
• 135° split point on diameters 3mm and above, eliminating the need for pre-drilling or centre punching. This prevents bit ‘walking’ and guarantees accurate starts
• Thick, rigid core for drilling hardened materials with confidence
• Sizes from 1.0mm to 13.0mm, covering the most common drilling needs

These features combine to create a dependable solution for those who require drill bits for hardened metal that don’t compromise on precision or performance.

Built for Professionals

Cobalt jobber drill bits are the tool of choice in workshops, construction sites and fabrication shops where hard and abrasive metals need to be drilled efficiently. They excel in applications such as stainless steel fabrication, engineering workshops and working with cast iron and bronze. Whether you’re a tradesperson working with metal every day, or a DIY enthusiast tackling demanding projects, our cobalt jobber drill bit set provides the durability and consistency you need.

Why Jobber Drills?

The term ‘jobber’ refers to a multipurpose or general-purpose drill for making ordinary cylindrical holes – like a ‘jobbing’ tradesman, it can do a wide variety of tasks. This means they are the most widely used drills across all kinds of industries and sectors. Their medium-length design provides the perfect balance between strength and reach, making them versatile enough for a wide range of applications.

By combining the jobber format with cobalt alloy, we’ve created a tool that offers all-round utility while excelling in tough environments. This makes our cobalt jobber drill bit set UK one of the most effective options available for anyone drilling metal.

Value and Convenience – A Box of 10

Each set contains 10 cobalt jobber drill bits, giving you excellent value while ensuring you always have replacements on hand. Whether you’re using them in a workshop or keeping them in your toolbox, a box of 10 means less downtime and more productivity.

Why Buy from Rennie Tools?

At Rennie Tools, we are committed to providing high-quality tooling solutions at competitive prices. Our cobalt drill bits are trusted by engineers, fabricators and tradespeople across the UK for their reliability and long service life. Regardless of what your trade or industry is, a cobalt drill bit set for metal from Rennie Tools provides precision, strength and efficiency.

We offer fast delivery across the UK, excellent customer support and a product range that meets the needs of both professionals and hobbyists.

Key Benefits at a Glance

• Premium cobalt drill bits for metal
• Manufactured from M35 HSS steel with 5% cobalt for toughness and heat resistance
• Designed for drilling stainless steel, hardened steel, cast iron and other tough alloys
• Accurate 135° split point prevents walking and reduces drilling time
• Cobalt jobber drill bit set supplied in a convenient pack of 10
• Trusted supplier of cobalt drill bit set UK

Order Your Cobalt Drill Bit Set Today

Don’t settle for standard drill bits that wear out quickly or fail under pressure. Invest in a cobalt jobber drill bit set from Rennie Tools and experience the difference in performance and durability. Whether you need drill bits for hardened metal or a reliable drill bit for drilling metal in everyday applications, this set is built to last.

Shop now and equip yourself with professional-grade tools that deliver results every time.