Shimano xt m780 10 speed triple chainseta high performance chainset from the classic atb group using the most advanced 10 speed dyna sys chainrings features forged hollowtech ii aluminium cranks offer unrivalled strength to weight ratio drilled steel and carbon composite construction middle ring combined with a thicker aluminium double anodized 42 tooth and plated aluminium 24 tooth ring for excellent rigidity and durability close ratio gear combination 42 32 24t provides improved cadence wh