Union Foundry has released the T0001 Rotafixer which allows cyclists to easily change cogs by simply using the bike’s drivetrain. This small tool also replaces the traditional lockring wrench and chainwhip that is needed when changing a cog and it no doubt looks quite nice on a keychain.

The Union Foundry T0001 Rotafixer will set you back $80. Get it exclusively at OPEN (link to PayPal store at the bottom of the page).

Here’s how the Rotafixer is used.

Union Foundry T-0001 Roto-Fix Tool from Paper Fortress on Vimeo.