1.800.651.4050 Mon-Sat 8am-5pm PT
Park Tool HR-8 Hex Wrench 8mm Park Tool HR-8 Hex Wrench 8mm
Click to zoom

Park Tool
HR-8 Hex Wrench 8mm

Mfg PartNum:HR-8
  (4 customer reviews)
Earn $0.17 in Rewards credit. Click to learn more.
This color/size is not eligible for Rewards points
In Stock
This item is currently not in stock. Click Notify Me to receive an email when the item becomes available.
InstantPrice MatchWhat is this?
Free Shipping on Orders Over $50*

The Right Tool For the Job

The Park Tool HR-8 Hex Wrench is a long-handled, 200mm L-shaped wrench for installing and removing crank bolts with an 8mm socket. Make from industrial grade 8650 chrome vanadium steel. "Speed Bearing" attachment for quick installation and removal of long threaded bolts.

Park tool is the industry standard for quality bike tools. Whether you're simply fixing a flat or disassembling your entire bike, Park Tool has the tool for you.


  • 8650 chrome vanadium steel
  • Recommended for installing and removing crank bolts
  • 8mm wrench w/ integrated speed bearing tip on handle for quick installation
  • Precision chamfered for a clean, tight fit

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%.


Weight: 160 grams


Mfg PartNum: HR-8 

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
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
Was this review useful to you? Yes/No
Thank you for your feedback.
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
Was this review useful to you? Yes/No
Thank you for your feedback.
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
Was this review useful to you? Yes/No
Thank you for your feedback.
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
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.
Was this review useful to you? Yes/No
Thank you for your feedback.