Shimano Deore XT BR-M8000 Black Hydraulic Brake Caliper without brake hose and oil Shimano mineral oil (not included) Oil pressure hose SM-BH90-SB or SBM (not included) Bleeding kit TL-BT03-S or TL-BT03 (not included) There is the case that a mount adapter is necessary depending on rotor size, and the shape of frame and fork (not included) Necessary tool to a brake caliper, a lever, and the brake rotor (not included)