Tools
Milwaukee Shockwave Magnetizer Set 48-32-455 Review: Cheap, Strong, and Surprisingly Useful
A rubberized magnetizer collar with embedded neodymium magnets and two Shockwave PH2 bits for around six to seven dollars. Small, inexpensive, and far more effective than it looks.
Introduction
Some tools earn their place on the workbench by being big and expensive. This one earns it by costing almost nothing and quietly solving a problem nearly every DIYer and tradesperson runs into: screws that refuse to stay on the bit. Milwaukee’s Shockwave Magnetizer Set (part number 48-32-455) is one of the least expensive solutions of its kind, and it punches well above its price.
Who This Product Is For
This set makes sense for anyone who regularly drives or removes screws with a drill or impact driver. If you have ever wrestled with a long screw wobbling on the tip of the bit, dropped a screw into a wall cavity, or fumbled one-handed screw starts in a tight spot, this is the kind of low-cost accessory that pays for itself the first week.
What You Get in the Set
The kit includes two Shockwave Phillips number two bits plus a small rubberized collar with embedded neodymium magnets. Everything ships on a simple hand card. The collar slides over a bit and turns it into a strongly magnetized one, meaning the magnetic force comes from the collar rather than the bit itself.

That approach has a nice side effect: the collar works with essentially any bit it will fit on, not just the included Shockwave bits. You are not locked into a proprietary system.
Main Strengths
The headline feature is raw holding power. A long screw can hang from the bit purely by magnetic force, with nothing to support it. That strength translates directly into practical benefits.

One-handed screw insertion becomes easy, which matters when your other hand is holding a panel, a bracket, or yourself steady on a ladder. It is equally useful for backing out old screws: when a stubborn screw finally pops free, the magnet keeps it from vanishing into a pile of debris or down a floor drain.
Things to Consider Before Buying
The rubberized material is very soft. On a used collar, it tends to gather dirt over time, and it can be squeezed and deformed without much effort. That softness does not seem to hurt the magnetic performance, but expect the collar to show wear and grime with regular use.

The other trade-off is the magnetism itself. The magnetic pull is genuinely strong, which is the point, but it can be slightly clunky when working around other metal objects. The magnetized bit tends to grab nearby fasteners, washers, or tool surfaces when you would rather it did not.
Buying Advice
At a street price somewhere between six and seven dollars for one collar and two bits, this is one of the cheapest options in its category. Comparable magnetizer products from other brands exist, but this set undercuts most of them while offering the same core benefit: a very strong, reusable magnetic collar that pairs well with the included Shockwave bits and works with other bits too.

If you only occasionally use a drill, this may feel like a luxury. If you drive or remove screws regularly, it is an easy recommendation. The low price means the risk of trying it is nearly zero, and the convenience gain is immediate.
Conclusion
The Milwaukee Shockwave Magnetizer Set is a small, inexpensive accessory that delivers exactly what it promises: two good Phillips bits and a very strong magnetic collar that makes one-handed screw work and screw retrieval noticeably easier. The soft rubber collects dirt and the strong magnet can be a little grabby in cluttered work areas, but for around six to seven dollars, the value here is hard to argue with.
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