There's no better insurance against breaking fragile bike components during fitting and servicing than a quality torque wrench. The Pro Bike Tool Adjustable Torque Wrench is a beginner-friendly device that should give years of good service.
There's no more gut-clenching sound than that of an expensive carbon fibre component going 'crack' as you add just that little extra twist of the wrench to make sure it's properly done up. A quality torque wrench removes the anxiety. As a mechanic with about a thousand bike services under my belt, I still use a torque wrench on any component that's sensitive to being over-tightened, even if I know by feel when something is done up properly. I owe it to my customers and my own nerves.
The trouble is, I've had more than one infinitely adjustable wrench go wrong – tightening up and waiting for the click that never comes. You only find out the tool has failed when it's too late. Those kinds of wrenches aren't cheap, either, and if you're not a regular user they may be a bit of a mystery to set the correct torque.
A torque wrench like this from Pro Bike Tool certainly makes matters simple. Set the dial to 4, 5 or 6Nm (err on the side of caution if recommended torques fall between these settings), insert the appropriate bit and tighten. When you get to the right tension there's a mighty 'snap', the tool 'lets go' and (unless you're wilfully stupid) you can't overtighten.
The Pro Bike Tool torque wrench is supplied with four bits: 3, 4 and 5mm hex wrenches and a T-25 Torx. One is always kept in the business end of the tool while the other three live inside the handle end-cap in a neatly made holder. That twists in and out very quickly.
Personally, I would find a 6mm hex useful too in the workshop, since some 6mm Allen bolts need doing up to 6Nm too. Most higher-end bikes these days don't have any 6mm bolts, but if your bike does or you have other shapes and sizes of fastenings you want to torque there's nothing to stop you fitting bits from another tool kit.
I'd also like a 3Nm torque setting, for some of those little fastenings that are easy to overtighten but often come with a 3mm or 4mm hex bolt, such as bottle cage mounts.
With the range of settings supplied, this tool is most useful for quick adjustments to seatposts, stems and handlebars, and in truth these are areas where you find lots of easily damaged carbon fibre.
You do need a spare 6mm hex tool lying around to change the settings on the tool, but that's not likely to be a problem for anyone who owns a bike.
Value is very good too, compared with the Park Tool ATD-1.2 - Adjustable Torque Driver Tool, which is functionally very similar. You probably wouldn't need to pay the full £75 retail price for one of those, but even against a discount the Pro Bike Tool wrench looks good value.
It's solid and well put together, with a comfortable handle, and fits easily in a pocket. I don't think I'd carry it around on a ride but it's a good one to have in the workshop or car for pre-ride adjustments.
Solid and well-made torque wrench that's easy to use, if a little limited in settings
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road.cc test report
Make and model: Pro Bike Tool Adjustable Torque Wrench 4/5/6Nm
Size tested: 4/5/6Nm
Tell us what the product is for and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?
Pro Bike Tool doesn't make a big fuss about this product, just some basic claims and facts set out on the website:
Accurate torque measurement to 4, 5, and 6 Nm.
Requires separate 6mm allen key to turn dial (sold separately).
Includes four interchangeable tool bits: 3, 4, 5mm allen keys and T25 to cover most bike needs.
Includes 'cam-over' feature, ensuring the torque wrench will continue to 'click-out' once the relevant torque is reached.
Fully tested for torque accuracy.
Ergonomic handle for comfortable use and to help apply the correct force.
Lightweight and portable.
Tell us some more about the technical aspects of the product?
12.5cm x 10.7cm x 3cm / 4.9 inches x 1.2 inches
6.6oz / 187g
It's nothing bling but very solid, well-thought-out construction that resists a bit of rough-and-tumble (that is, dropping) in the workshop. The supplied bits seem good quality or you can use any hexagonal-fitting bits from your own tool box.
A loud snap every time makes this a confidence-inspiring tool in the workshop.
Excellent so far. My experience with torque wrenches is that they either go wrong after a week or last indefinitely. So far this is going strong.
You probably won't want it in your pocket but it's one for the workshop or car rather than for out on the ride.
Good ergonomic handle makes this comfortable to use and you don't need to break a fingernail to swap the bits.
The obvious comparison is to the Park Tool ATD-1.2 - Adjustable Torque Driver Tool, which is functionally very similar. You probably wouldn't need to pay the full £75 retail price for one of those, but even against a discount the Pro Bike Tool wrench looks good value. Compared to a new handlebar it's money well spent.
Tell us how the product performed overall when used for its designed purpose
Difficult to fault from this point of view. It would be even more useful with a 3Nm setting and you need a separate 6mm hex to set the torque.
Tell us what you particularly liked about the product
A loud snap when the required torque is reached, well made and nice to use.
Tell us what you particularly disliked about the product
I'd choose one with a 3Nm setting if I were shopping for one.
Did you enjoy using the product? Yes
Would you consider buying the product? I'd consider it.
Would you recommend the product to a friend? Yes
Use this box to explain your overall score
For what it offers the Pro Bike Tool Adjustable Torque Wrench does the job well. It's solid and well made, comfortable and easy to use, and a sensible price for the quality. I'd find it more useful with a 3Nm setting as well.
About the tester
I usually ride: Cannondale CAAD10 My best bike is: Tomassini Prestige
I've been riding for: Over 20 years I ride: A few times a week I would class myself as: Experienced
I regularly do the following types of riding: touring, sportives, general fitness riding, mountain biking