This socket set buying guide helps you choose the right kit fast. Match the drive size to the job — 1/4 inch for small fasteners, 3/8 inch for general work, 1/2 inch for car and heavy jobs — and buy metric sockets for almost everything sold in Australia. Look for chrome vanadium steel, six-point sockets and both shallow and deep options, then add extensions and a decent ratchet.
What is a socket set and what's in one?
A socket set is a collection of hollow, hex-shaped sockets that clip onto a ratchet handle to loosen and tighten nuts and bolts quickly. Instead of a fixed spanner for every size, one ratchet drives dozens of sockets, so you spin fasteners far faster than by hand.
A typical set includes the sockets themselves, a reversible ratchet, one or more extension bars, and often a universal joint and a few screwdriver or hex bits. Better sets arrive in a moulded case that keeps every size in its labelled spot.
You'll find socket sets throughout any good hand and power tool range, from compact 40-piece kits for the kitchen drawer to 200-piece mechanic's chests.
Drive size: 1/4, 3/8 or 1/2 inch?
Drive size is the square drive on the ratchet that the socket clips onto, and it's the most important choice in this guide. It sets how much torque you can apply and which socket sizes fit.
1/4 inch drive
The smallest common drive, ideal for small bolts, electronics, bike parts and tight spaces. It's light and precise but not built for high torque, so don't reach for it on wheel nuts.
3/8 inch drive
The all-rounder most home users should start with. It handles the majority of car, mower and household fasteners with a comfortable balance of reach and grunt.
1/2 inch drive
The heavy hitter for suspension bolts, wheel nuts and engine work. It delivers serious torque and takes larger sockets, though it's overkill for delicate jobs.
Many keen DIYers eventually own all three. If you buy just one, a 3/8 inch set covers the widest range of everyday tasks.
Metric vs imperial: which do you need?
In Australia, metric sockets measured in millimetres are what you'll use almost all the time. Modern cars, appliances, furniture and machinery sold here are built with metric fasteners, so a metric set is the safe default.
Imperial sockets, sized in fractions of an inch, still matter for older American and British vehicles, some imported machinery, classic motorbikes and vintage tools. Using an imperial socket on a metric bolt (or the reverse) risks rounding off the corners, so it pays to have the right standard on hand.
If you work on a mix of gear, a combination set with both metric and imperial saves frustration. For most households, though, start metric and add imperial only if a specific job demands it.
Socket depth, points and materials
Beyond drive and sizing, a few build details separate a set that lasts from one that rounds bolts within a year.
Shallow vs deep: shallow sockets suit most bolt heads, while deep sockets reach nuts on long threaded rod or recessed bolts. A good set includes both.
Six-point vs twelve-point: six-point sockets grip the flats of a fastener and resist rounding, which is best for tight or worn bolts. Twelve-point sockets are quicker to locate on the fastener but slip more easily under heavy load.
Material and finish: look for chrome vanadium steel for hand sockets, and black impact-rated sockets if you'll use a rattle gun. A polished chrome finish wipes clean and resists rust in a damp shed.
Which socket set suits which person?
The best set depends on what you actually work on. Use the table below to match a starting point to your needs.
| User | Best drive size | Standard | Look for |
|---|---|---|---|
| Home & flat-pack DIY | 1/4 & 3/8 inch | Metric | Compact case, screwdriver bits, both socket depths |
| Weekend car & mower | 3/8 & 1/2 inch | Metric | Six-point sockets, deep sockets, spark plug socket |
| Serious mechanic | 1/2 inch (plus 1/4 & 3/8) | Metric & imperial | Impact-rated sockets, large size range, quality ratchet |
| Classic or imported vehicles | 3/8 & 1/2 inch | Imperial or combination | AF sizing, wide range, durable case |
Whichever you pick, buy a little more range than you think you need. It's the missing 10mm or the one deep socket that sends you back to the store mid-job.
Kitting out the rest of the workshop
A socket set is the heart of a toolkit, but a few companions make every job smoother. Good lighting is first — a torch such as the Infinity X1 7000 lumen rechargeable flashlight throws plenty of light into a dark wheel arch or under the bonnet where fasteners hide.
When you're building or repairing gear that needs a soldered joint, keep a fuel top-up like the Weller 200g extra-filtered butane refill for your soldering iron, or a portable stove cartridge such as the Gasmate 220g butane cartridge 4 pack for the camp kitchen on longer projects.
If your work involves counting fasteners or checking parcel weights for postage, a bench scale like the Emajin 40kg digital counting scale earns its place. Browse the wider tools and automotive selection to round out the garage in one go.
Care and usage tips
A quality socket set outlasts a cheap one many times over, especially when you look after it. Simple habits keep everything working and accounted for.
- Wipe sockets down after greasy jobs and return each to its labelled slot so you spot a missing size instantly.
- Never cheat with a pipe on the ratchet handle; use a breaker bar for stubborn bolts to avoid snapping the ratchet mechanism.
- Match the socket to the fastener exactly, and prefer six-point sockets on worn or seized bolts.
- Use impact-rated sockets with rattle guns, as chrome hand sockets can shatter under impact.
- Store the case dry and add a light oil film to bare steel if your shed gets damp.
Treat the set as a long-term investment and it'll be handing out the right size long after a bargain kit has rusted and rounded off.
Frequently asked questions
What size socket set should a beginner buy?
Start with a 3/8 inch drive metric set of around 40 to 100 pieces. It covers most car, mower and household fasteners with a good balance of torque and reach. Choose one with both shallow and deep sockets and a few screwdriver bits, then add a 1/4 inch or 1/2 inch drive later as specific jobs call for them.
Do I need metric or imperial sockets in Australia?
Metric sockets handle almost everything in Australia, since cars, appliances and machinery sold here use metric fasteners. Buy metric first. Add imperial sockets only if you work on older American or British vehicles, classic motorbikes or some imported equipment, as using the wrong standard on a bolt can round off its corners.
What's the difference between six-point and twelve-point sockets?
Six-point sockets contact the flat sides of a fastener, giving a stronger grip that resists rounding, which suits tight, worn or seized bolts. Twelve-point sockets have twice the engagement points so they slip onto a fastener faster, but they grip the corners and can round bolts under heavy load. Six-point is the safer everyday choice.
How many pieces should a good socket set have?
Piece count matters less than the range of sizes and quality of the sockets. A focused 40 to 100 piece set with the sockets you actually use beats a 200 piece kit padded with bits you'll never touch. Prioritise a full run of common metric sizes, both socket depths, a solid ratchet and useful extension bars.
