Start with the material and the hole
Record what you will drill, the required hole diameter and the depth. Wood, metal, masonry and tile can need different bits. Identify the actual layer you intend to drill rather than buying for a vague description such as “the wall.” This guide helps prepare a purchase; follow the tool and bit instructions for use.
Recognize the main families
Wood bits include centred-point twist bits and wider-hole styles such as spade bits. Metal drilling commonly uses high-speed-steel bits. Masonry bits have a different cutting tip, and a product described for masonry is not automatically the right choice for tile or reinforced concrete. Read the package’s specified materials.
Check that the shank fits your tool
The shank is the end held by the drill. A conventional chuck and an SDS holder use different fittings. Check the drill model and holder type before choosing a bit or set. Do not assume a bit will fit because the cutting diameter is within the size you want.
Take a short specification to the shop
Bring the drill model, material description, hole size and any fixing manufacturer’s instructions. Staff can compare compatible products from that information. For an existing wall or ceiling, locate services and understand the construction before drilling; purchasing a material-labelled bit does not establish that the location is safe.
Find a nearby location in our hardware stores directory, or continue with how to measure a screw before buying a replacement.
Published 2026-11-03 · reviewed with each rebuild, last November 2026.
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