FORMULA ORO - A2Z SINTERED BRAKE PADS - A2Z brake pads are made out of sintered material. They also improve the braking feel and control in all conditions. Wear indication line: It is very dangerous riding a bike with worn out brake pads. A2Z patented wear indication can remind the user to replace the brake pad when the brake pads become to low. Rated as one of the best replacement pads in the marketplace. You get one set of pads which will do one caliper and the spring.These Pads are Suitable for the Formula ORO system.