Shimano tiagra fc4650 10sp compact chainringssg x chainrings feature strategically placed chain pick up pins and tooth profiles to ensure fast and positive shiftingfeaturesmaterial aluminiumweight approx 824 gram 175mm crank arm length without bb cupsincluded in delivery without bottom bracket cupsteeth 50 34fitting for derailleur shimano 10 speedaxle profile integrated axlebolt circle 110mma 2 year warranty is offered with all shimano products from chain reaction cycles 3 years on d