A drill bit set can cover wood, metal, masonry and plastic, but no single bit does everything well. Sets differ in the material the bits are made from, the coating, the point style and the sizes included. We have not used these products ourselves, so this guide covers the features worth comparing and how to read a listing without being swayed by the number of pieces.
Think about what you drill most. A household set for shelves, curtain rails and small repairs needs a modest range of sizes, while a workshop that drills steel needs bits built for hard material and a way to keep them cool. The case matters as well, since a clear size marking helps you find the right bit quickly. The table below sets out the main factors.
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What to Look For
| Factor | Why it matters | What to check |
|---|---|---|
| Bit material | Decides how well the bit holds an edge in hard stock. | High speed steel, cobalt alloy or carbide, as the maker describes. |
| Coating | Can reduce friction and add some wear resistance. | Oxide, titanium based or other coating named by the maker. |
| Point style | Affects how easily the bit begins a hole without wandering. | Split point, brad point or standard point, matched to the material. |
| Size range | Gives you the diameters you will really use. | Smallest and largest bit, and whether sizes are metric, fractional or both. |
| Shank type | Must fit your drill chuck. | Round, hex or reduced shank, and quick change compatibility. |
| Case design | Keeps bits organized and protected. | Clear size labels, a snug hold on each bit and a sturdy latch. |
Setup and Care Tips
- Match the bit type to the material, using masonry bits for brick and concrete and brad point bits for clean holes in wood.
- Use a center punch on metal so the bit does not wander as the hole begins.
- Drill metal at a lower speed with cutting oil, following the maker’s guidance.
- Back bits out regularly when drilling deep holes to clear chips.
- Return bits to the case after use and wipe off moisture to limit rust.
Mistakes to Avoid
- Choosing a set by piece count rather than by the sizes and materials you actually need.
- Using a wood bit on metal or masonry, which dulls it quickly.
- Pressing hard and running at high speed, which overheats the bit.
- Ignoring the shank type and then finding it does not suit your drill.
- Leaving bits loose in a drawer where the edges knock against each other.
FAQ
Is a cobalt set worth choosing over standard steel?
Cobalt alloy bits are generally made for harder material such as stainless steel and tolerate heat well. If you mostly drill wood and soft metal, a standard steel set may be enough.
Can one set drill every material?
Combination sets exist, but each material usually works better with a bit made for it. A small collection of targeted bits often beats one large mixed set.
Questions to Ask Before You Buy
- Which materials will I drill most: wood, metal, plastic, masonry or tile?
- Which sizes do I use often, and which ones do I never touch?
- Does my drill have a keyless chuck, and what shank sizes does it accept?
- Do I prefer a case with labeled slots so I can spot missing bits?
- Would I rather buy a small set now and add single bits later?
- Is the set metric, fractional, or both?
Compatibility Checks
Check the chuck capacity of your drill against the largest bit in the set. Some sets include reduced shank bits that fit smaller chucks, while others need a full size one. If you use an impact driver, look for hex shank bits made for that tool. For masonry, make sure your drill offers a mode suited to the material, and read the maker’s manual first.
Think about how the bits are held in the case. Slots that keep each size separate are easier to manage than a loose pile. Bring a spare for sizes you use a lot.
Matching It to Your Job or Space
A homeowner hanging shelves and assembling furniture needs a modest range of common sizes. A woodworker may want brad point bits for clean entry. A metalworker needs bits meant for hard material and a steady supply of cutting fluid, following the maker’s manual, local rules and a qualified professional where needed. A tradesperson on a van will value a hard case that survives bumps.
Feature Trade-offs
| Choice | Benefit | Drawback |
|---|---|---|
| Large set | Covers many sizes | Many bits go unused |
| Small focused set | Light and simple | May miss a needed size |
| Coated bits | Smoother cutting in some jobs | Coating can wear off |
| Uncoated bits | Simple, easy to sharpen | Less slippery in hard material |
Storage Notes
Return each bit to its slot after use, wipe off dust or oil, and keep the case closed in a dry place. Rust forms quickly in damp garages, so a silica pack in the case helps. Sort worn or bent bits out of the set rather than forcing them. Replace damaged pieces instead of using them, and follow the maker’s manual for sharpening.
The Short Version
Decide which materials you drill, then compare bit material, point style, size range and shank type. A well organized case is a useful extra, and the maker’s own details should guide the final choice more than the piece count.