Roller chain's simple design accommodates many link and roller variations and makes it integral to conveyor systems. Small rollers are used in lightweight chains for light-load, high-speed applications. Large rollers with greater pitch values give roller chain higher tensile strength to handle heavier loads. While cotter pins and rivets allow multi-strand roller chain configurations, attachment chain links fasten to the chain or replace existing links for lengthening or adapting an attachment. Motion stocks roller chain and accessories in a variety of pitches, series, link types, and materials.