Cassette remover tool cassette lockring tool for the removal of shimao hg cassettes use in addition with the ribble r cw chain whip for best results can be used with 20mm spanner or socket driver hardened finish about ribble cycles founded in 1887 ribble cycles continues to be at the very heart of british cycling from award winning bikes to innovative clothing and accessories our long cycling heritage means that we truly understand your needs created by cyclists for cyclists