4.5mm Drill Bits

Drive through tough materials on site or in the workshop with our robust selection of 4.5mm drill bits. Engineered for heavy-duty performance, these bits deliver clean, highly accurate holes while resisting wear under intense pressure. Whether you are grafting on a commercial installation or tackling custom metalwork, having the exact diameter bit on hand ensures you maintain a professional finish and prevents frustrating project delays.

Choose from a variety of functional profiles to suit your specific application. Our range includes heat-resistant cobalt options for boring into abrasive and hardened alloys, alongside friction-reducing high-speed steel titanium bits that provide an extended lifespan during repetitive drilling tasks. We also supply standard jobber designs that offer excellent rigidity and rapid material removal. Secure reliable, trade-quality results with stock from trusted manufacturers like Bosch, Draper, and Abracs.

Frequently Asked Questions | FAQs

When should I use a 4.5mm cobalt drill bit?

Cobalt drill bits provide exceptional heat resistance, making them the ideal choice for boring into highly abrasive and hardened materials like stainless steel or cast iron. They withstand heavy-duty site work without rapidly losing their cutting edge.

What are the benefits of a 4.5mm HSS titanium drill bit?

A titanium coating significantly reduces friction and heat build-up during intense use. This helps the bit maintain its sharpness for longer, making it highly effective for repetitive, fast-paced drilling through metal, wood, and tough plastics.

Are 4.5mm jobber drill bits suitable for general fabrication?

Yes, jobber drill bits feature a standard length-to-diameter ratio that offers an excellent balance of reach and structural rigidity. This allows you to drill highly accurate clearance holes without the bit easily wandering or snapping under pressure.