Shimano ultegra fc6750 10sp compact chainringsgenuine shimano replacement part for use with shimano ultegra fc 6750 g 10spd compact double chainset 50 34tcan also use 50t outer chainring from fc 5750 this is a b match which indicates that the parts are usable but differ in materials appearance finish size etc featuresteeth 50t 34tbcd 110mmhollow forged reduces flex for more responsive shifting and better power transfera 2 year warranty is offered with all shimano products from ch