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HSS (high speed steel) twist bits handle wood and metal. For masonry, brick and concrete you need tungsten carbide-tipped (TCT) masonry bits — standard HSS bits will blunt instantly. For wood, spade bits and Forstner bits cut clean, large-diameter holes. For tiles, use a diamond-tipped or carbide spear-point bit. A mixed drill bit set covering HSS and masonry covers most DIY needs.
The key factors are tooth count, bore diameter and kerf width. More teeth give a finer, slower cut — ideal for finishing work and sheet materials. Fewer teeth cut faster but rougher — good for ripping timber. Make sure the bore matches your saw's arbor size, usually 20mm or 30mm. TCT blades last far longer than standard steel blades and are worth the extra cost for regular use. Browse our circular saw blade deals.
For a random orbital sander you need hook-and-loop sanding discs, typically 125mm diameter. Use 60–80 grit for heavy material removal, 120–150 grit for general sanding, 180–240 grit for fine finishing before painting or varnishing. Always check the pad size and fixing type matches your sander model.
Cutting discs (thin, usually 1–1.6mm) cut metal and stone — never use them for grinding as they can shatter. Grinding discs (thicker, 6mm+) remove material from welds, rust and metal surfaces. Flap discs combine cutting and finishing. Diamond blades cut tile, stone and concrete. Always check the disc's rated speed is equal to or higher than your grinder's maximum RPM.
For occasional DIY use, budget drill bits are often fine. For regular trade use, quality bits from brands like DeWalt, Bosch or Makita last significantly longer and are less likely to snap. Cobalt HSS bits are worth the extra cost for drilling hardened steel. For masonry, a quality TCT bit makes a noticeable difference in drilling speed and accuracy compared to cheap alternatives.
Yes — impact driver bits are made from torsion-zone steel that flexes under the high rotational force of an impact driver, reducing breakage. Standard screwdriver bits are too brittle and will snap quickly. For driving large numbers of screws, quality impact bits from brands like Bosch, DeWalt or Milwaukee are worth the investment.
At 1sttools.co.uk we track prices on thousands of power tool accessories from the UK's leading retailers — including Screwfix, Toolstation, B&Q, Amazon and Machine Mart — so you can find the best deal without visiting every site. Prices are updated regularly so what you see reflects current availability.
Whether you need a simple drill bit set for weekend DIY, a pack of jigsaw blades for a project, or professional-grade angle grinder discs for trade work, our comparison covers the full range across all major brands including DeWalt, Bosch, Makita, Milwaukee and more.
Looking for the tools themselves? Our power tools section covers drills, saws, grinders, sanders and more from all the leading UK retailers.
