chain guides to extend the life and performance of their chains. The earliest type of guides were called roller chain guide strips or roller chain guide rail, these were just simply strips of plastic put in place for the chain to run on. Though the terms have stayed relatively the same, since then roller chain guides have been perfected for each chain size and material type. USA Roller Chain and Sprockets offers a complete line of high-quality roller chain guides and guide rails. Using a roller chain guide is recommended in applications where the chain is dragging or