Abstract: A coil rack for preventing the rolling of circularly-shaped payloads on a flatbed trailer. The coil rack has a base that can be releasably secured to the flatbed trailer. A stop surface extends upwardly and perpendicularly from the base to prevent the payload from rolling. An "L-shaped" flange extends from the bottom of the base and engages a corresponding "L-shaped" channel in the head of an "I-beam" which forms a portion of the flatbed trailer. A brace surface is also coupled between the stop surface and the base for strength. The use of pairs of these coil racks, one on each side of the payload, along the length of the flatbed trailer, prevents the payload from rolling.