Grafton Speed Controller L-Brackets Converts To V-brake Pad By ImprovePart Collections We redesigned the return system

We redesigned the return system using a straight steel spring structure similar to that of a V-brake

After upgrading my own Headshok Fatty SL with this part

a machining setup error resulted in the small chainring mounting threads being cut as M8 × 1

To accommodate different needs

The the boot is redesigned by Improve Part team

Grafton Speed Controller L-Brackets Converts To V-brake Pad By ImprovePart Collections We redesigned the return systemThese little brackets convert Grafton cantilever brakes to use threaded v brake pads. They bolt to the brake arms in place of the pad eyelets. They are the Speed Controllers. The Price is per piar.