Shimano R550 Flat Bar Road Brake Levers Shimano's R550 Flat Bar Road Brake Levers are a budget-friendly choice for all your short-pull brake needs. Short Pull Super SLR actuation means that these levers work with road calipers, cantilever, and mechanical road disc brakes. Simple styling and durable construction get the job done right. Features: Actuation: Short Pull Super SLR 22.2 clamp diameter Works with road caliper, cantilever, and road mechanical disc brakes Sold as pair | Shimano R550 Flat Bar Road Brake Levers Black