Intended to be used for sports purposes. The brake is characterized by a very solid construction, it has a reservoir for the brake fluid. The diameter of the piston of the master cylinder: 0.75 "The set includes the elements shown in the pictures below: a handle with mounting, the master cylinder. The brake pump has connectors: inlet - AN4 - 7/16 "outlet - AN3 - 3/8" Connectors for rigid (copper / steel) or flexible hoses and sports brake hoses are available at our store. Installation on flexible hoses does not require a specialist hose clamp.