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Magnetizers and demagnetizers are small, clever tools that let you add or remove magnetic force from metal tools, fasteners, and bits. Think of them as a tiny on/off switch for magnetism — one moment your screwdriver holds a tiny screw like a magnet, the next moment it releases it cleanly. Whether you're fiddling with electronics, working on a bike, or assembling furniture, these gadgets reliably save time and frustration.
If you’ve spent any time balancing tiny screws on the end of a screwdriver, you’ll appreciate a magnetizer in an instant. These tools boost precision, speed, and safety by keeping bits and screws in place while you work in awkward angles or tight spaces. Conversely, demagnetizers prevent small metal shavings or stray screws from clinging to tools, and they protect sensitive electronics from unwanted magnetic fields. In short: they make good work better — and they’re pocket-friendly.
There are a few common designs to know about, each suited to different tasks and budgets. Understanding the differences helps you pick the right one for your tool kit.
These are simple, rugged rods or blocks made of strong permanent magnet material. To magnetize, you pass the screwdriver tip over the magnetized surface in one direction; to demagnetize, you either run the tip through a special slot that cancels the field or pull it away from the magnet in a particular motion. They’re compact, inexpensive, and ideal for quick jobs where you want a reliable hold on screws.
Electronic units use a coil to generate a magnetic field when powered, offering stronger and sometimes adjustable magnetism. Many of these devices can also demagnetize by employing an alternating current or by turning off the current in a controlled way. These work well for professionals who need a higher magnetic force or who want to magnetize larger bits and tools.
Demagnetizers come as small blocks with one or more slots and as pen-shaped tools. The block style often combines magnetizer and demagnetizer features in a single body: one slot magnetizes and another demagnetizes. Pen-style demagnetizers are convenient for on-the-spot use — slip the bit into the pen and the magnetic field is neutralized. They’re perfect for electronics where stray magnetism can be a problem.
In the UK you’ve got plenty of options, from specialist electrical suppliers to big-box DIY chains. Here’s a rundown of reliable places to shop, whether you prefer browsing in person or comparing prices online.
Expert Electrical is a go-to for electricians and serious DIYers looking for quality brands and a broad range of tool accessories. If you’re hunting for established names like C.K. Tools or specialist magnetizer kits, Expert Electrical often stocks pro-grade options. Their selection leans professional, so you’ll find durable units built for regular use on job sites.
Screwfix is a favourite among tradespeople for fast availability and a wide product range. They carry basic magnetizers and combined magnetizer/demagnetizer blocks that suit most home and workshop needs. Screwfix also runs occasional deals that make picking up a dozen bits and a magnetizer feel like a steal.
Toolstation competes closely with Screwfix and often has similar stock at competitive prices. The advantage here is a good mix of value and quality, and you can pick up pen-style demagnetizers or combo tools in-store quickly. If you prefer browsing online, Toolstation’s site is straightforward and filters make finding the exact type easy.
For weekend warriors and homeowners, B&Q and Wickes provide accessible options. Their magnetizers tend to be geared toward simple home tasks — useful for furniture assembly or light repairs. They’re great if you want something affordable and easy to find without needing a specialist store.
RS Components caters to industry and electronics hobbyists with higher-spec items and niche brands. If you need an adjustable electronic magnetizer or a unit for precision screwdriver sets, RS might be the place. Amazon UK, meanwhile, offers vast choice and fast delivery, including user reviews that help you judge performance. Always cross-check specifications and ratings, especially when buying from marketplace sellers.
One product name you’ll run into a lot is the C.K. Magnetiser/Demagnetiser. It’s favoured because it’s compact, durable, and easy to use: run a screwdriver or bit through the magnetizing slot for a dependable hold, or through the demagnetizing slot to neutralize magnetic force. For many, the C.K. unit is the sweet spot — professional quality without an excessive price tag. It’s especially handy on the workbench and slips into a pouch well, like a reliable little helper that’s always ready.
Picking the right unit is about matching the tool to the task. Consider what you’ll magnetize, how often, and in what conditions. Here are the criteria that matter most.
If you mostly work with tiny screws in electronics, a gentle pen-style demagnetizer that keeps components safe is ideal. For larger bits and power-tool accessories, you want a stronger magnetizer — coil units or larger permanent magnets that can hold a 1/4-inch hex bit securely. Match the strength to the size of the job.
Worksites are rough on tools. Plastic housings are fine for occasional home use, but if you’re a pro, opt for models with metal reinforcement or robust casing. A well-built magnetizer will handle being dropped and won’t lose its effectiveness after a few months.
Do you want something that fits in your pocket or a small pouch? Pen-style and small block magnetizers are the most portable, while coil-based electronic units are bulkier. Think about where you’ll store it and whether it needs to travel in a toolbelt or stay on the bench.
Once you’ve got a magnetizer or demagnetizer, a few simple techniques can make you look like a seasoned pro. For magnetizing a screwdriver, stroke the tip from the handle toward the point one or two times — that’s often enough to get a good hold. For demagnetizing, slowly pass the tool through the designated slot or along the demagnetizer while pulling it away; that reverses and cancels the field.
If you’re trying to prevent a bit from magnetizing an entire power tool, magnetize the bit only after insertion, or use a removable bit holder that can be demagnetized separately. Want to pick up a tiny screw in a deep recess? Use the magnetized bit like a fishing rod — gentle taps will help release the screw without losing it.
Magnetizers are low maintenance, but a little care extends their life. Keep them clean and dry; wipe away metal dust and shavings that accumulate during use. Avoid dropping the magnetizer onto hard surfaces as impacts can chip permanent magnets. For electronic units, store them out of direct moisture and check the power cord and connections periodically to ensure safe operation.
Finding the best value means comparing like for like. Specialist electrical suppliers like Expert Electrical often carry premium brands, while Screwfix and Toolstation offer competitive prices on standard units. RS Components is great for industrial-grade tools, and Amazon can provide quick delivery and wide choice. If you want to compare prices and features in one place, use a reputable comparison site to view listings from multiple retailers — that saves time and reveals bargains during sales or clearance events.
Magnetizers are generally safe, but a few sensible precautions help. Keep them away from sensitive electronics unless you intentionally want to magnetize or demagnetize a tool. Avoid close proximity to magnetic stripe cards and hard drives. If you’re using an electronic coil unit, follow instructions for power handling and never immerse it in liquids. Treat strong magnets carefully — they can pinch fingers or snap together with surprising force.
Think beyond the magnetizer itself. A good set of bits, a magnetic bit holder, and a small parts tray with magnetic base can make jobs much smoother. For electronics work, anti-static mats and demagnetizing pens ensure components aren’t affected by magnetic stray fields. These small accessories often cost less than the magnetizer but multiply its usefulness.
Before you click buy, run through a short checklist: what size bits will you magnetize (measure in inches if needed), do you need bench or pocket portability, will you use it daily on jobs or just occasionally, and do you prefer a brand-backed warranty? Answer those and you’ll land on the right tool fast.
For pro-grade choices, Expert Electrical and RS Components are strong. For everyday convenience and competitive pricing, Screwfix and Toolstation are excellent. For bulk choice and user reviews, Amazon UK is handy, and for simple household needs, B&Q and Wickes do the job. Use comparison sites like ZoneOffer to scan multiple retailers at once and spot the best match for your needs and budget.
Whether you’re tightening a tiny screw in a TV set or organizing a day of installations, a magnetizer/demagnetizer is one of those small investments that pays back in time saved and fewer dropped screws. Pick the style that fits your workflow, and you’ll wonder how you ever managed without it.
Conclusion: Magnetizers and demagnetizers are compact, inexpensive tools that make a big difference in efficiency and accuracy. From simple permanent magnet blocks to adjustable electronic units, the right choice depends on the scale of your jobs and how often you use the tool. Explore specialist suppliers like Expert Electrical for pro options, check Screwfix and Toolstation for value, and consult comparison sites to snap up the best deal. With a little practice, these tiny tools will quickly become essential in your toolkit.
| Magnetizers & Demagnetizers | Price | |
|---|---|---|
| Ck Magnetiser Demagnetiser | £ 7,86 |
