If you have Campagnolo disc brakes with your H11 or 12-speed groupset, and prfer to do your own maintenance, you need to have this simple, but specific Campagnolo Disc Brake Bleed Kit which consists of two syringes with hoses and fittings for your hydraulic disc Ergopower levers and disc calipers. Bleeding or servicing the brakes is not overly complicated, and a good online video can be found, but having this kit makes it all work. Please keep in mind that Campagnolo also uses a specific weight and viscosity mineral oil fluid, which is sold separately in various sizes.