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Park Tool
HR-8 Hex Wrench 8mm

Mfg PartNum:HR-8
  (4 customer reviews)
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An 8mm hex wrench an essential tool in any mechanic's tool box. Park's HR-8 features an extra long 200mm L-shaped handle for plenty of torque when installing and removing crank bolts. Industrial grade Bonhaus Protanium Steel construction and "Speed Bearing" attachment to quicken the installation of long bolts.

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.

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Excellent quality tool
by westsiderrider
Competitive Racer
Los Angeles, CA

Park Tool makes tools of the highest quality and this piece is no exception. If you need a 8mm hex wrench, you can't go wrong with this one.

Reviewed 10/9/2014
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Handy spare tool to have around at a reasonable price.
by Anonymous
Cycling Enthusiast
Seattle area

This is the right tool for certain bicycle pedals,

I have one on the bike or in the car to remove the pedals when hauling

the bike around.

The ball end really helps!

Reviewed 9/17/2020
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It's a wrench... a Park Tool wrench.
by Road4Track
Competitive Racer

Park Tool 8mm... should be around for a long time, just like my other Park Tools.

Reviewed 7/24/2014
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Best quality I've found
by Long Haul Biker
Cycling Enthusiast
2 of 2 customers found this review helpful.

I bought this wrench to use on my crank arm bolts. They've hex type. I believe in tightening these as tight as possible. This wrench did the job without bending.

Reviewed 10/25/2012 Comments
Just have to be careful not to overtorque these, particularly if you're using a traditional square taper bottom bracket and crankset, as you'll push the arm so deeply onto the spindle that it'll wear faster. Once the spindle is flush with the end of the crankset on those, they'll no longer press on. We also recommend applying blue Loctite to crank bolt threads.
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