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  • Park Tool 3-Way Hex Wrench
  • Park Tool 3-Way Hex Wrench
  • Park Tool 3-Way Hex Wrench Detail
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Park Tool3-Way Hex Wrench
$11.49 - $12.95

Item # PAR0290

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  • Regular, 4/5/6mm ($11.49)
  • Balldriver, 4/5/6mm ($12.95)
  • Regular, 2/2.5/3mm ($11.49)
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Item # PAR0290

Arguably the most popular tool in cycling.

When making adjustments to your bike, the three most common hex sizes are 4, 5, and 6mm. Park Tool, being the savvy purveyor of bicycle repair equipment that it is, developed what's quite possibly the most iconic shop tool ever -- the 3-Way Hex Wrench.

Known internally at Park Tool as the AWS-1, and to mechanics worldwide as a 'Y-wrench,' this three-way has 4, 5, and 6mm hex wrenches. Each are bonded to a sturdy plastic center handle in order to ensure a firm grip. And by having three sizes instantly available, you'll spend less time fumbling around, and more time fixing things.

  • A handy hex wrench that is at home in every work bench
  • Includes a 4mm, 5mm, and 6mm wrench on one three-way
  • Comfortable handle makes long work a breeze
  • Tools are built from steel for long-term durability
  • Sturdy plastic center helps keep your grip secure

California Proposition 65


Cancer and Reproductive Harm -

Tech Specs
Tech Specs
[wrenches] steel, [handle] plastic
Other Tools
4, 5, 6mm hex
Recommended Use
home bicycle maintenance
Manufacturer Warranty
limited lifetime

Reviews & Community


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Park is the best

  • Familiarity: I've put it through the wringer

Park Tools...nuff said. I've used both Park and Pedros....both reputable, both durable. A three-way (3mm, 4mm, 5mm) is a very useful tool if you don't want a bunch of loose t-handle or allen keys rattling around in your tool bag. I use the regular ends. I don't like the balldriver ends...those round off easily, just my opinion.

Love It!

  • Familiarity: I've put it through the wringer

I bought another after mine broke after 4 years of used! Love it! its my go to when I need to tighten or lose some parts of my bike.

Go-To Wrench

  • Familiarity: I've used it several times

This little dude can get you through the majority of simple repairs on a bike. Simple, effective, easy to keep in a pocket while you bounce between tasks.

Literally Get's the Job Done!

  • Familiarity: I've put it through the wringer

It's a "Y" wrench by Park Tool, there isn't to much to say.
It is well made, fits tight into the bolt heads and has a little longer reach than most. Would buy again if I lost this one.

You need this, you just don't know it...

  • Familiarity: I've used it several times

It is so nice to grab one tool and be able to adjust almost everything on my bike. This is replacing an "all in one" tool that I have had for years. If you have used the all in one solution, you know it is good in a pinch on the trail, but is more difficult to use than dedicated tools like this. I keep this with me when riding with large groups or on bike trips when mechanical work is a possibility. This is one of those purchases that you wonder how you lived without it.

bought one for the truck...

  • Familiarity: I've used it several times

These are just too handy to not have around. Bought this one to keep in my truck for trailhead tightening and adjustments. Easy in the hand and easy to manipulate. On occasion the shape won't let it get into tight spaces, but 90% of the time this works great.


  • Familiarity: I've put it through the wringer

Between this and the Park Tool Hex & Torx 3-Way Wrench they cover 90% of the adjustments and maintenance for my bike. For sure my go to tools.
If you have any questions about this or any other products feel free to reach out to me directly at 801-523-4053 or

superb tool from Park/Bondhus

  • Familiarity: I've put it through the wringer

With this tool and the 4,5,6mm version you have in just two tools the hex wrenches needed to perform 90+% of the tightening of hex bolts on a typical bike.

Ball driver wrench

  • Familiarity: I've put it through the wringer

Most frequently used tool you can have on the workbench. Definitely go with the ball driver version as it allows you to tighten / loosen things are funny angles.

Home Work Bench

  • Familiarity: I've put it through the wringer

Building a bench at the house and just one of the many tools needed. Does everything you need for a 4, 5 and 6 mm.

Love the Tri

  • Familiarity: I've put it through the wringer

Probably my most used tool ever, and more durable and cheaper brands.

Must have for the shade tree bike mech

    Your not doing it right if you don't have one of these in your toolbox. You can tackle 90%+ maintenance jobs with the tri-hex


    • Familiarity: I've put it through the wringer

    Bought this tool for small adjustments or emergencies out on the trail. It has worked great so far, and I expect to keep using it for years to come. I would highly recommend this product!

    Balled end tool works well

      Balled ends are great when you can't hit the nail perfectly on the head, classic park tool quality works well!


      • Familiarity: I've put it through the wringer

      I got this and tossed it into my bucket of cleaning and maintenance supplies. It does what it is suppose to and has taken a beating but still going strong. Very happy and would buy again!

      My Daily Driver...

      • Familiarity: I've put it through the wringer

      Great tool for daily bike maintenance. Features a great #4 hex, an even better #5, and the best #6 hex on the market. For all your metric adjustments this fits the bill.

      No other bike tool than park tool

      • Familiarity: I've put it through the wringer

      I have been using park tool for a while now, and nothing has failed, all of there tool are built to last and work great!