· Brake Systems Compatible with Sram Code R / RS / RSC, Guide RE, G2 RE, DB8, Motive ( Not applicable for G2 R / RS / RSC；Guide R / RS / RSC )· E-BIKE FORMULATION - Specifically designed for electric bikes, electric mountain bikes, cargo bikes, and other heavy-duty applications needing enhanced braking performance and durability.· HIGH ENDURANCE AND LIFESPAN - Low wear and long-lasting pad life· HEAT DISSIPATION: Withstand high temperature and fading-resistance under extreme riding conditions.· ALL WEATHER CONDITION -High braking performance in all weather conditions, mud or dry dirt.· PACKAGE INCLUDED: Two pairs of disc brake pads, along with two high quality springs (for two wheels)· MADE IN TAIWAN ; Backplate : Steel