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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 [drill bit sets guide](/web/content/discovery/ideas-and-advice/drill-bit-sets-guide).

### 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.


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Drill Bit Sets | Metal Drill Bit Set | RS

Drill Bit Sets

DeWALT 63-Piece Masonry Drill Bit Set for Masonry 4mm Min, HSS Bits

Bosch 5-Piece Masonry Drill Bit Set for Multi-Material 4mm Min,...

Bosch 100-Piece Masonry Drill Bit Wood Drill Bit Set for...

Bosch 7-Piece Masonry Drill Bit Set for Multi-Material 4mm Min,...

Bosch 50-Piece Masonry Drill Bit Wood Drill Bit Set for...

DeWALT 55-Piece Masonry Drill Bit Set for Masonry 3mm Min, HSS Bits

RS PRO 9-Piece Twist Drill Bit Set for Masonry 4mm Min, Tungsten...

RS PRO 18-Piece Twist Drill Bit Set for Masonry 3mm Min, HSS Bits

Buy from our selection of drill bit sets from Dewalt. At RS, we strive to give you the best offers from our supplier and to promptly deliver in the shortest time.

Dewalt Drill Bit Sets | RS

Buy Masonry Drill Bit Sets. Browse our latest Masonry Drill Bit Sets offers. Free Next Day Delivery.

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Please browse our range of Dormer Drill Bit Sets At RS, our aim is to give you the best offers with free next day delivery.

Dormer Drill Bit Sets | RS

<p>Explore the world of precision drilling with Dormer's Drill Bit Sets. Their curated sets are designed to cater to a variety of applications, providing you with a comprehensive selection for your workshop needs such as the <a href="https://uk.rs-online.com/web/p/drill-bit-sets/0695305">Dormer 91-Piece Twist Drill Bit Set for Multi-Material</a>. Dormer Drill Bit Sets come in organised and durable cases for easy access and storage. Choose a set with the organisation system that best suits your workspace.</p><h2>Size Range:</h2><p>From compact sets for intricate tasks to comprehensive sets covering a wide diameter range, Dormer has the set for you. Sets range from 2 – 25 pieces with sizes ranging from 1mm suitable for drilling pilot holes and smaller screws, to 80mm, mostly used for cutting large holes in wood, plastic, and thin metal sheets.</p><h3>Material and Coating Technology:</h3><p>Dormer drill bits are made from premium materials like High-Speed Steel (HSS), ensuring durability and longevity. Dormer Drill Bit Sets are engineered to withstand the demands of professional use.</p><p>So why elevate your drilling experience with sets featuring advanced coatings such as Titanium Nitride (TiN) Dormer's coated drill bit sets offer increased resistance to wear, enhancing overall performance.</p><ul><li>Titanium Nitride (TiN)- With a maximum application temperature of 450°C, this is suitable for the machining of steel and non-ferrous metals (except aluminium). <a href="https://uk.rs-online.com/web/p/drill-bit-sets/7947666">Dormer 25-Piece Twist Drill Bit Set for Multi-Material</a></li><li>HSS-E drills share a similar design with HSS-G drills, but their primary distinction lies in the cobalt alloy content (either 5% or 8%). The material used in HSS-E tools is of superior quality and exhibits exceptional heat resistance. This characteristic allows for the machining of materials with high tensile strength, making them particularly well-suited for working with stainless steel. Nevertheless, the presence of the cobalt alloy in HSS-E drills compromises their toughness, making them more susceptible to breakage. <a href="https://uk.rs-online.com/web/p/drill-bit-sets/7947672">Dormer 19-Piece Twist Drill Bit Set for Multi-Material </a></li></ul><p>Tailor your selection based on the specific applications you handle. Dormer's commitment to precision and quality shines through in every Drill Bit Set, offering sets optimised for general purpose drilling, metalworking, woodworking, and more.</p><p>To find out more on drill bits, check out our guide on <a href=" https://uk.rs-online.com/web/content/discovery/ideas-and-advice/drill-bit-sets-guide">Drill bits</a>.</p>

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