Chainrings included, 39/52 tooth, crank arm length is 172.5mm. Also take a look at my other advertisements with Vintage Bicycle stuff!The item "NOS Shimano 105 Crank Set FC-5500 172.5 mm 52/39 9sp VINTAGE OctaLink Crankset" is in sale since Tuesday, May 25, 2021. This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Cranksets". The seller is "vintagebikercom" and is located in Ugchelen. This item can be shipped worldwide.