Runwell KUROKO chainring nut tool
USA orders totaling $100 or more receive free shipping.
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⚠️ IMPORTANT NOTICE: Effective 10/14/22, the option for local pickup is unavailable because we are in the process of moving to a new location. Until our new retail store opens in early 2023, all orders placed online will be shipped.
Returns for eligible products are accepted within 30 days of the purchase date. Some exclusions apply.
For complete information, please see our Returns page.
By far the most innovative little tool to ever exist, Runwell's KUROKO is a special tool for making easy work of installing and removing chainring bolts.
To use, secure the back of the bolt with two claws and a 6mm hex wrench and tighten the bolt with a 5mm hex wrench from the front. Then, throw all of your other chainring bolt tools in the trash.
Includes a cute lil' transparent pouch for storage.
KUROKO was developed with reference to bolts attached to NJS certified parts. Some other chainring bolts may have bolt grooves that are shallow and may lack stability during use.
• durable steel construction
• length: 16cm
• weight: 10g