Handmade in Boulder, CO, Butter’s B1 chain holder classes up the dirty act of chain maintenance.
Made of machined billet alloy, the chain slides across a lathed Delrin spool. The whole thing is held in place with a strong spring and steel axle.
Butter says they’re also great for travel, keeping the chain in place inside a bike case (assuming you don’t remove the rear derailleur, anyway).
They retail for $40 each, including shipping. Add $5 for international orders. More pics below…
Get the Morgan Blue version for 1/4 the price http://www.wiggle.com/morgan-blue-chain-keeper/
Actually you can’t use an old skewer, unless you rework it with a 130 or 135 spacer. Try it if you think it will work well without one.
That said, I do have issue with this as anything more than a work stand aid. I would never travel with a bike without protecting a sans wheel rear triangle. So it’s useless for that since it only grabs the drive side dropout.
for $40 you can buy this… http://www.wiggle.co.uk/morgan-blue-complete-maintenance-kit-with-bucket/ which is the best cleaning product ever and it comes with essentially the same thing.
Or you can buy the Bike Medicine Chainholder $19.50 at half the price.
For less than $20 you can buy this chain keeper: https://www.amazon.com/Sportixx-Chain-Keeper-Bicycle-Tool/dp/B071V59Z6J
