10 Best Metal Drill Bits 2025 in the UK

The Bosch Professional 25-Piece PointTeQ HSS Twist Drill Bit Set is tailored for users needing a comprehensive range of metal drill bits, thanks to its wide size range from 1mm to 13mm. Made from High Speed Steel, these bits promise durability and effective performance across various materials like steel, non-ferrous metals, plastics, and even wood. The standout feature is the PointTeQ tip design, which enhances drilling speed by reducing heat and wear, making it efficient for prolonged use. With a cutting angle of 135 degrees, the bits are primed for precision and faster penetration in harder materials.

The black oxide finish provides a degree of resistance against corrosion, though it may not be as protective as other coatings like titanium. The cylindrical shank design ensures compatibility with most standard three-jaw drill chucks, which is convenient for general use. However, if you're dealing with particularly tough metals, you might notice some limits to their resilience compared to premium-coated alternatives. The set's organization in a ProBox is a practical touch, facilitating easy storage and transport.

Garnering high customer ratings and positioned as a bestseller, the set is well-regarded. It's worth noting that while the set is hand-powered, it doesn't come with a power source. This product is ideal for DIY enthusiasts and professionals seeking a reliable and versatile drill bit set for various tasks but may not be suited for those needing the utmost in precision and durability for heavy-duty metalwork.

The Hi-Spec 99pc Complete HSS Mixed Drill Bit Set offers a comprehensive solution for various DIY drilling tasks. Made from High Speed Steel (HSS4241), these drill bits promise faster cutting and better heat resistance compared to standard high-carbon steel bits, making them suitable for drilling in soft metals like aluminum and mild steel, as well as wood and plastics. However, they are not recommended for tougher materials such as heat-treated or hardened steel.

A key strength of this set is its titanium nitride coating, which enhances surface hardness and reduces friction, helping to maintain sharpness and increase wear resistance. This feature can be particularly beneficial for extended use, as it may prolong the lifespan of the bits. The set includes 99 pieces, covering 14 metric sizes ranging from 1mm to 10mm, which provides versatility for various projects.

The drill bits come in a compact box case, making storage and transportation convenient. The case has separated compartments with a protective foam insert, and the sizes are clearly printed under the lid, which is secured with a steel catch, adding to their portability and organization. Despite its strengths, the set's round shank design may not offer the best grip or stability in high-torque applications compared to hex shank designs. This could be a minor drawback for those looking for ultimate precision or working with demanding materials.

In essence, the Hi-Spec drill bit set is well-suited for general DIY enthusiasts tackling everyday tasks, but may not meet the needs of professional users requiring more advanced performance for industrial-grade materials.

The Rennie Tools Box of 10 x 5mm HSS Gold Cobalt Jobber Drill Bit Set is a well-regarded option for those needing to tackle tough materials like stainless steel, hardened metals, cast iron, and more. One of its main strengths is the use of high-grade M35 HSS steel with a 5% cobalt content, lending these bits excellent hardness, heat resistance, and durability. This makes them a great choice for both professional settings and heavy-duty DIY projects.

The bits feature a 135° split point design, which helps in preventing 'walking' during drilling and allows for faster penetration, reducing the need for pre-drilling or center punching. The gold coating not only enhances durability but also provides an aesthetic appeal. Their straight shank type makes them compatible with a wide range of drills, including handheld and CNC machines.

A notable advantage is the two-flute design that improves chip removal and ensures smooth cutting, which is particularly beneficial when working with hard metals. Supplied in a convenient plastic storage case, these drill bits are easy to organize and transport, enhancing their usability for both professionals and DIY enthusiasts. On the downside, the drill bits are specifically designed for 5mm applications, which might limit their versatility for some users who need a variety of sizes. Additionally, while they are rated highly by users (4.6 out of 5 stars), the premium material and performance features come at a slightly higher cost compared to standard drill bits. Nonetheless, if you're dealing with tough materials regularly, investing in this set might prove worthwhile for its reliability and longevity.