Compare full list


Drill bits are cutting tools that are used to remove material in a piece to create a circular hole. Having the right size and the right type of bit is key in ensuring the highest standard of work and ensuring that you can drill with confidence and accuracy. Learn more in our complete guide to drill bit sets.

### What materials are used for drill bits?
- **Carbon Steel** – This material provides a drill bit with better durability and hardness, therefore increasing the life of the bit. Carbon steel can withstand higher temperatures and is more suitable for harder materials.
- **HSS (High-Speed Steel)** – HSS can withstand higher temperatures without compromising the hardness of the bit and is able to cut faster with more accuracy and efficiency.
- **Cobalt Steel** – The cobalt content increases the strength of the bit and aids in the resistance to heat and friction, so it can be used for more stubborn materials.
- **Tool Steel with Tungsten Carbide Tips** – TCT provides a longer working life for the bit while allowing for a more stable and solid tip and enabling it to withstand more rigorous drilling applications.

### What coatings are used to enhance drill bits?
- **Black Oxide** – An economical coating that prevents corrosion and increases stress relieving at the bit. It also helps in retaining drilling lubricants for longer and is most suitable when drilling iron and steel.
- **Bronze Oxide** – This coating increases the stress relieving of the bit. It is normally used on its own so that it is easy to identify cobalt steel. It can also be used with black oxide to better identify higher grades of HSS.
- **Titanium Nitrate** – This coating increases the hardness of the bit, whilst providing a thermal barrier for high friction applications. It is a more expensive coating than others but helps to increase production rates and tool life. TiN coated drill bits are best suited for drilling more stubborn materials like iron, steel, aluminium and more.

### Common types of drill bits
- **Twist** – The most common type of drill bit and ideal for drilling wood, plastic, and metals. They are generally made from HSS and are suited to general household DIY tasks, as well as professional applications like maintenance and engineering.
- **Masonry** – The TCT drill bits are the best to use when drilling brick, block, stone and mortar and are most commonly used in the construction industry. They are generally used with a hammer power tool for more effective results.
- **SDS (Slotted Drive System)** – These have a special shank that fits into the chuck of an SDS power tool. The SDS system delivers a higher standard and more efficient results than a standard hammer drill when working with harder materials like concrete.


Shop our range of Drill Bit Sets supplies & accessories. Free Next Day Delivery. Browse our latest Drill Bit Sets offers.

Hole Saws | Core Drill Bits | RS

Drill Bit Sets

Buy Bosch Drill Bit Sets. Browse our latest Bosch Drill Bit Sets offers. Fast and hassle free delivery.

Bosch Drill Bit Sets | RS

Buy DeWALT Drill Bit Sets. Browse our latest DeWALT Drill Bit Sets offers. Fast and hassle free delivery.

DeWALT Drill Bit Sets | RS

Buy from our selection of Drill Bit Sets from Dormer. At RS, we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.

Dormer Drill Bit Sets | RS

Buy EXACT Drill Bit Sets. Browse our latest EXACT Drill Bit Sets offers. Fast and hassle free delivery.

EXACT Drill Bit Sets | RS

Buy Facom Drill Bit Sets. Browse our latest Facom Drill Bit Sets offers. Fast and hassle free delivery.

Facom Drill Bit Sets | RS

Buy from our selection of Drill Bit Sets from Irwin. At RS, we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.

Irwin Drill Bit Sets | RS

Buy Makita Drill Bit Sets. Browse our latest Makita Drill Bit Sets offers. Fast and hassle free delivery.

Makita Drill Bit Sets | RS

Buy SAM Drill Bit Sets. Browse our latest SAM Drill Bit Sets offers. Fast and hassle free delivery.

DeWALT Drill Bit Sets

Popular Searches