The full in SwissStop Full FlashPro means that this brake pad kit comes with pads and holders. There will be no stripped set screws or lost parts. Simply remove your old, worn out pads and bolt on something better. SwissStop has over 70 years of experience in working with technical rubber compounds that allows them to produce brake pads with tuned performance characteristics. SwissStop pads have superior stopping power, low pad wear rates, very linear brake response, and a smooth, quiet performance. Think of them as the Assos or the SRM of brake pads. FlashPro means one thing: These are compatible with Shimano and SRAM brake calipers. To better the performance over the previous Flash pads, the FlashPro has deeper asymmetrical grooves and a more pronounced leading edge profile. The idea is to squeegee away more water to improve the wet weather performance and the deeper grooves help give the pads better modulation. They increased the total pad depth with more material above the wear line good news for those folks that live in the high mountains. The Original Black compound is SwissStop's standard all purpose replacement pad for aluminum rims. It's ideal if you don't use carbon rims and if you don't relish the idea of riding in the rain. Please note that they do just fine in the rain, but SwissStop makes better pads for you if you find yourself in the wet stuff on a regular basis. One order gets you 2 pads total enough for one wheel.