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Park Tool QTH-1 quick change bit driver set



High-quality bit driver that's worth the investment for keen home or professional mechanics
Quick and comfortable to use
Good selection of 'bits'
Great quality
More expensive than some with torque-setting capabilities

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

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Park Tool's QTH-1 makes changing between tool heads quick and very simple. The T-bar is comfortable and the whole magnet-based mechanism is built to a very high quality, making the QTH-1 a long-lasting solution for the home or professional mechanic. It's an investment, though.

The QTH-1 is a T-handled bit driver with eight bits, and covers most of the components on your bike. In the kit you get the T-handle with its neat looking anodised and machined handle, and a plastic tray fitted with magnets to hold the bits in place.

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The bits include a 2,2.5,3,4,5 and 6mm hex key plus a T25 Torx bit, and a P2 screwdriver bit. They are hardened steel and have worked well on a whole range of bike related adjustment, repairs and downright bodging.

2021 Park Tool QTH-1 - bits.jpg

The sizings are all spot on and I never had any issues with slipping on varies bolts or screws.


For around half the money you can get models which include torque meters, such as the Pro Bike Tool Adjustable Torque Wrench for £36.49, or the very similar-looking Merida Adjustable Torque Wrench for £26.99, but the QTH-1 is aiming higher. It's built to withstand daily use in the workshop, and that quality goes a long way to justify its price.

Each bit is held in place by a magnet which is powerful enough to stop it falling out, but a quick tug is enough to remove it – and you only actually need to pull the lever on the side to release it. That drags the magnet away up inside the tool, leaving the bit free to stay stuck in the holder. Or fall out on the floor. Whichever you prefer...

2021 Park Tool QTH-1 - tool detail 2.jpg

The only issue with swapping bits this way – plugging the old one back in its hole, releasing it and capturing a new bit – is if the two parts don't line up straight away. Obviously you need to get the tool's opening and the hex bit aligned for one to slip inside the other, but twisting the T-handle will easily spin the bit in the holder.

> Beginner's guide to bike tools - get all the vital gear for basic bike maintenance

Other than that, I found the tool quick and easy to use when swapping between pieces.

The tray itself can be screwed to the wall or bench, or if you want to keep it portable its magnets hold it to any steel surfaces, such as on your bike stand. The QTH-1 is easily stowed in a bikepacking bag for repairs trail-side, though at 256g it's not seriously competing with multi-tools.


The QTH-1 is a very good bit of kit – possibly a bit overkill for the home mechanic considering the price – but if you want a tool you can rely on for years to come it's worth the investment.


High-quality bit driver that's worth the investment for keen home or professional mechanics

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Make and model: Park Tool QTH-1 quick change bit driver set

Size tested: n/a

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?

Park Tool says, "The QTH-1 is a professional-grade tool built to withstand the rigours of daily shop use, and is fully rebuildable."

It is a very high quality piece of kit for the workshop.

Tell us some more about the technical aspects of the product?

Park Tool says:

The QTH-1 is an ergonomic T-handled bit driver equipped with eight common bits to fit a wide variety of fasteners and fittings found on bicycles

The magnetic quick-change handle allows for one-handed operation and makes changing bits quick and easy

The bit holder can be magnetically attached to any magnetic surface such as a repair stand or tool box, or can be permanently mounted to any wall or tool board and also includes empty spaces for 2 extra bits

Includes the following magnetic 1/4" bits - 2mm, 2.5mm, 3mm, 4mm, 5mm & 6mm hex, T25 Torx compatible and #2 Philips cross tip

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Tell us how the product performed overall when used for its designed purpose

Can be a little fiddly to locate the bits, but once done it is very quick and efficient.

Tell us what you particularly liked about the product

Simple to use.

Tell us what you particularly disliked about the product

It's an investment, price wise.

How does the price compare to that of similar products in the market, including ones recently tested on

Other brands deliver adjustable torque wrench designs for half the money.

Did you enjoy using the product? Yes

Would you consider buying the product? Yes

Would you recommend the product to a friend? Yes

Use this box to explain your overall score

For this money options like a ratchet or torque wrench would be nice, but at least you know that this tool is going to last the test of time.

Overall rating: 8/10

About the tester

Age: 42  Height: 180cm  Weight: 76kg

I usually ride: This month's test bike  My best bike is: B'Twin Ultra CF draped in the latest bling test components

I've been riding for: Over 20 years  I ride: Every day  I would class myself as: Expert

I regularly do the following types of riding: time trialling, commuting, club rides, sportives, fixed/singlespeed,

With 20 years of road cycling and over 150,000 miles in his legs it's safe to say Stu is happiest when on the bike whatever the weather. Since writing his first review for back in 2009 he has also had a career in engineering including 3D-CAD design and product development, so has a real passion for all of the latest technology coming through in the industry but is also a sucker for a classic steel frame, skinny tyres, rim brakes and a damn good paintjob.
His fascination with gravel bikes is getting out of control too!

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