Fits 1200-1600cc Aircooled and T25 Waterboxer engines. Secures rocker cover firmly in place. Manufactured by HPC in the U.K. This clip, made by HPC in the U.K., is designed to hold rocker covers securely on 1200-1600cc Aircooled engines and T25 Waterboxer engines. Engineered for durability and a precise fit, it ensures that your rocker cover stays firmly in place, preventing leaks and ensuring optimal engine performance. .