Fits record power bs 350 / bs 350s. Record power blades are manufactured to tight tolerances using a specialist premium, high carbon steel strip. an extensive quality control programme involves digital tooth profile checks & set analysis to result in a blade which cuts straighter & has harder, longer lasting teeth than many other makes on the market. the prices are already competitive but when you take into account the longevity of our blades as well, the true value for your money can be fully appreciated. Image for reference only.