Hand Tools
Klein Tools Slim Profile Magnetic Mini Ratchet 652000 Mag: Small Tool, Real Upgrade
Klein updated its slim mini ratchet with magnetic bit storage, a new bit set, and a finer 90-tooth ratchet. Here is what changed and who it is for.
Introduction
Some tools look impressive straight out of the box: big motors, big batteries, big price tags. Then there are tools like this one. At first glance, the Klein Tools Slim Profile Magnetic Mini Ratchet (model 652000 Mag) looks almost like a toy. Hang it on a pegboard at the store and you might reasonably ask why anyone would need it. That is exactly the reaction worth overcoming, because this is the kind of tool you forget about until the one job that requires it, and then it saves the day.
If you already own the older 652000 model, which is still available, the new Mag version is worth a close look. Klein fixed three issues that frustrate owners of the previous model: the bit set, bit retention, and the ratcheting mechanism.
Who This Tool Is For
This is a tool for people working out in the field. Mechanics, HVAC technicians, electricians, and plenty of other trades will find a use for it. Klein designed it with those trades in mind, which is also why the included bit set has been reworked to match what those users actually reach for.
It is not a replacement for a full-size ratchet. It is meant for very small jobs, getting into tight areas like a glove box, an electrical box, or any other enclosed space where a regular ratchet simply will not fit.
What It Is and How It Works
The mini ratchet is a slim, compact driver with a small bit sleeve and a ratcheting head. Four bits come included: a couple of square drivers, a Phillips, a slotted, and similar basics, so whatever small fastener you run into, the right bit is likely already in the sleeve. The sleeve can be removed to make getting the bits out easier.

A common worry with a tool like this is bits falling out during use. Klein is a pro-grade brand focused on HVAC, electrical, and increasingly other trades, and the sleeve holds these bits very solidly. The bits go in snug and stay that way.
Magnetic Bit Retention: The Standout Change
On the older model, the bits essentially just fell out. The new version uses a strong internal magnet instead of a friction fit, so a bit snaps in with an audible click and stays put. That single change makes the tool far more pleasant to use in awkward positions.

There is a bonus benefit: because the magnet is inside the tool, it magnetizes the bit itself, which helps prevent dropping screws while you work. A small magnet icon on the back of the head signals the feature at a glance.
The Ratchet Mechanism and Direction Control
The previous model used a 72-tooth ratchet. The new Mag version upgrades this to a 90-tooth system, meaning noticeably more teeth and a finer swing arc, which matters when you are working in cramped quarters with barely any room to move.

At the back of the head there is a switch to set the ratcheting direction: left or right, righty tighty or lefty loosey. The layout makes it easy to flip direction without taking the tool out of the space you are working in.
Another practical touch is the loop at the end. Many people assume it is for hanging the tool on a carabiner, and it works for that, but its real purpose is extra leverage. Wedge it against a panel or box in a tight spot and you get the extra force needed to break a screw loose where a regular ratchet could never fit.
Things to Consider Before Buying
This is not an everyday tool for most people, and Klein does not pretend otherwise. It exists for the specific jobs where nothing else fits. If you rarely work in tight spaces, the older 652000 model still available for around $16 may be enough. The new Mag version runs about $21.98, and the premium buys you the magnetic bit retention, the updated trade-focused bit set, and the 90-tooth ratchet.
Buying Advice
If you own the older model, the three fixes here are the kind that quietly improve every use of the tool: bits that snap in magnetically, a bit set matched to the trades that buy it, and a finer ratchet arc. If you are buying for the first time, the Mag version is the sensible choice given the modest price difference.

For mechanics, HVAC technicians, and electricians, this is a cheap insurance policy against those frustrating jobs where the fastener is buried in a gap no normal tool can reach.
Conclusion
Klein clearly listened to its users with the 652000 Mag. The updated magnets, refreshed bit selection, and upgraded ratcheting system turn a simple niche tool into a genuinely better version of itself. Is it for everybody? No. But when you need it, you really need it, and once it is in the bag you will be glad it is there.
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This product is mentioned in the review. Check the specifications, options, and compatibility before buying.
View more details for Klein Tools Slim Profile Magnetic Mini Ratchet 652000 Mag