Replacement inserts for Shimano cartridge v-brake pads Grooved for water displacement VType: exact specification as Shimano pads with Kool Stop's patented plow tip. Thinner than V-Type 2 pads VType 2: thicker for longer life, 1.5mm more pad material than standard V-Type pads Black: standard compound designed for dry condition riding Red: semiaggressive compound for good performance Salmon: aggressive compound for extreme weather conditions Green: designed for ceramic coated rims Dual: combination of Salmon and Black compounds for more controlled, smoother stopping