The Simson V-brake cartridge brake shoes 72 mm are suitable for Shimano V-Brake systems. Because the cartridges of these brake shoes can be replaced, it is not necessary to replace the entire brake shoes. The Cartridges of the brake shoes are separately available under the name Simson Replacement Cartridge V-brake. Remove the locking pin on the top of the brake shoe with a pliers. Slide the worn cartridge against the travel direction out of the brake shoe. Slide the new brake pads into the brake shoe and secure with the locking pin. The Simson Brake shoes are supplied per two pieces.