Original Shimano Dura-Ace FC-9000 / XTR M9000 Kurbelarmklemmschraube links Y1E512100
Shimano part no.: Y1E512100. It has an M6 x 15 mm thread. If both original bolts are to be replaced, you must order this item twice. Shimano DURA ACE/XTR Clamping Screw for Crank Arm. 1 x Shimano DURA ACE/XTR clamping screw for crank arm left.