Roller Chain Sprocket Advantages Our roller chain sprockets are manufactured with high-quality aluminum hubs. This lends their design durability and strength. The body of our roller chain sprockets is manufactured with glass reinforced nylon. Glass reinforced nylon offers a number of material advantages that contribute to the overall durability of our sprockets design. Nylon is not only self-lubricating but also rust resistant. Nylon is also lightweight and durability. Together, aluminum and nylon, combine to create an extremely durable design that offers users a long service life. All of these advantages, along with the affordability of nylon, make this one of the most efficient and cost-effective roller chain sprockets on the market. , Download a CAD drawing and view a 3-D model of the SPROCKET S2521 7/16 Roller Chain Sprocket from Torque Transmission.