Truvativ Descendant Troy Lee Designs 12 Speed Eagle Dub Chainset - 36TTruvativ Descendant Troy Lee Designs 12 Speed Eagle Dub Chainset 36T For the artist, the challenge of the solution is the inspiration to create. The crank arm perfected in performance by SRAM engineers is a utilitarian canvas begging to be transformed. Troy Lee, design artist, took to that canvas. And now, those of us who have seen can never unsee. It's the crank, made more. Same same. But forever different. Chainring material: Aluminium Chainring