Rear U Brake For Road Bike Bicycle Metal Rubber Outdoor Sports New Cycling Description: It is exclusively used in the road bicycle and fixed gear bike. With high quality it is very durable and safe. Color:black/red/blue/green/silver. Material:Metal + Rubber. Specifications:It can be installed when the distance between the center of brake mounting holes and the edge of the brake rim is actually within 47-62MM.If the distance is too short or too long it can not be installed. Package includes: 1 x Bike Rear Brake