My planetx/cycleops/saris/sportcrafter roller belt is on it’s last legs now. I can’t find a replacement and have spoken to the importer Raleigh who said the earliest delivery is the end of July.

But I have found online a Minoura belt but I can’t tell if it will fit the grooves on my roller. Anyone got one to measure the diameter please? Mine is 4mm for reference.

thanks.