Shimano deore m615 disc brakeshimanos deore m615 disc brake is a fully bled hydraulic disc brake with easily adaptable post style caliper the deore m615 disc brake is compatible with the revolutionary centerlock rotor system and conventional 6 bolt rotors featuresfront fully bled lever and caliper comes without adapters or rotors giving you the freedom to customise to suite your bikecan be used with the revolutionary centerlock rotor system which fits easily to centerlock compatible hubs alt