Crankarm fixing bolt and pinch bolt for the Shimano Dura-Ace 7800-series Hollowtech II crankset.Pinch Bolt: Shimano P/N Y1E512100 Fixing Bolt: Shimano P/N Y1F308000Sold singly. To start from scratch, you need qty 1 fixing bolt and 2 pinch bolts. | Shimano Dura-Ace Fixing and Pinch Bolt Pinch Bolt Dura-Ace 7900 and 7800