Promax B-1 Cartridge Replacement Brake Pads
The B-1 cartridge brake pad replacement inserts are a colorful way to replace the pads on your B-1 brake shoes but they are compatible with most brands of linear brakes that use a cartridge type pad. Their cartridge holder design makes replacing the 70mm pads as quick and easy as removing a pin, sliding out the old and sliding in the new.
These were absolutely terrible. I just replaced the back and left the Aztec pad on the front as it had about half wear on it. Front brakes stopped great, back hardly at all. An unfortunate discovery on extremely steep downhill with a switchback at the bottom. Going back to a pad that'll actually stop my bike.