Avid single digit 7 brakethis no nonsense rim brake features a lightweight and durable forged caliper design and cartridge style pads light powerful and efficienteverything you need in a classic rim brake features weight 185 grams per wheel caliper design forged pad rw2 cartridge pad adjustment screw style special features stainless steel hardware oversized linear spring aluminum pivot bushings compatibility mountain style leversbuyavid componentsfrom chain reaction cycles the w