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Park Tool
HR-8 Hex Wrench 8mm

  (3 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.

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Excellent quality tool
rating
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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It's a wrench... a Park Tool wrench.
rating
by Road4Track
Competitive Racer
Seattle

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
rating
by Long Haul Biker
Cycling Enthusiast
Portland
1 of 1 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
WesternBikeworks.com 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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