SHIMANO R650 Dual Pivot Caliper Bicycle Brake - BR-R650 Cartridge shoe holder Shimano Super SLR system CALIPER BRAKE, BR-R650 FRONT - CS57, 27.5MM PIVOT BOLT 10.5MM SUNKEN NUT, W/R55C2 SHOE REAR - CS57, 12.8MM PIVOT BOLT 10.5MM SUNKEN NUT, W/R55C2 SHOE