Easy to install, this low-maintenance coupling hub offers clean, dependable, quiet performance in hot, humid environments. It absorbs shock, misalignment, and end float. No lubrication required. TB Wood's® Dura-Flex® shaft couplings are 100% part-for-part interchangeable with popular bonded tire couplings, with design, materials, and construction that are superior to common orange polyurethane coupling elements. The split-in-half design that allows easy element installation without disturbing shaft connection; no need to move connected equipment. Dura-Flex couplings accommodate shaft misalignment and minimize vibration to help prevent damage to connected equipment, and offer a large range of spacing with few parts. Note: A complete coupling assembly consists of 2 hubs and 1 element, sold separately.