Shimano ultegra r650 dual pivot brake calipers are aimed at the serious road cyclist who wants dependable performance the 57mm drop compact dual pivot design allows for superior braking performance without sacrificing weight and brake shoe replacement and adjustment is easy with cartridge shoe holders in addition the r650 features toe in adjustable brake shoes these calipers are constructed from cold forged aluminium and anodised in a silver finish and low friction performance is assured th