Bicycle Shimano brake caliper set SORA BR-3500 front rear rim brakes For Folding Bike Road Bike Caliper Brake C brake Note: the brake caliper arm is 39-51mm. It is used for Folding bike Road Bike, please make sure your application before place the order, thanks! Feature: Mount Type Option: Recessed,Nutted Position: Front/Rear/ Front and Rear System Dual Pivot Caliper Brake Material Forged aluminum arms Pads adjustable angle cartridge pads Front Brake Caliper screw: Bolt 26mm with 30mm nuts Rear Brake Caliper screw : Bolt 12mm with 13mm nuts Dimension 39-51 mm Colors: black Fit for Folding Bike, Road Bike Caliper Brake(C brake). Package included: 1 set bicycle Brake Caliper(as the picture)