Replacement insert pads to fit cartridge style V-brake carriers Compatible with the Aztec V-type System Shimano mountain bike cartridge systems & many other third party models Removes the need to re-set the brake pad position just slide out the worn pad & slide in the new one High performance Aztec compound & design for long life all weather braking power Compound designed specifically for use with alloy rims Secured in place by two small split-pin which are included Supplied as a pack of two pairs