4mm Drill Bits

Achieve professional, precise results across multiple applications with our versatile range of 4mm drill bits. Built to deliver clean, accurate holes, these bits drive through tough materials quickly while resisting wear and tear during heavy use. Whether you are grafting on a major commercial build or updating bathroom fixtures, having the exact diameter bit in your kit maximises efficiency and stops frustrating project delays.

Choose from a comprehensive selection of high-performance profiles designed to handle your specific tasks. Our range includes heavy-duty cobalt bits for boring into hardened metals, friction-reducing HSS titanium options, and robust masonry and multi-material bits for versatile site work. For specialised jobs, we also supply extended-length jobber bits and precise glass and tile cutters. Secure reliable results with trade-quality stock from Bosch, Draper, and Minotaur.

Frequently Asked Questions | FAQs

What is a 4mm multi-material drill bit used for?

A 4mm multi-material drill bit saves you time by cutting through masonry, wood, plastic, and metal without needing to constantly change your bit. They are perfect for general site work and versatile home renovations where you encounter various materials.

When should I choose a 4mm cobalt drill bit?

Choose a cobalt drill bit when boring into highly abrasive or hardened materials like stainless steel or cast iron. Cobalt provides exceptional heat resistance, allowing the bit to maintain its sharp cutting edge even under heavy-duty, continuous use.

Can I use a 4mm glass and tile drill bit for bathroom fittings?

Yes, 4mm glass and tile bits feature a specially designed carbide tip that pierces hard, glazed surfaces without wandering, cracking, or shattering them. This makes them ideal for safely and securely mounting lightweight bathroom fixtures or mirrors.