Originally Posted by CambridgeSteve

I have a somewhat associated query that someone might be able to assist with. The wheels I recently purchased had a 6 speed cassette which was 13T to 24T in an anodised gold. The largest sprocket had a slightly shorter tooth every 6th tooth, clearly by design. Does anyone know what this design is for and what brand the cassette may be. It has no markings so I am assuming it is low end stuff.