FSA Crank BoltMade from super tough CrMo Alloy with an anodised finish and laser etched FSA logo. For use with certain MegaExo cranks and is suitable for Road, MTB, E-Bike and Urban use. Thread is 18mm (M18) in diameter, total length of 21mm and the bolt head outside diameter is 27mm.Features: Material: AlloyCompatibility: Road Energy, Road Gossamer (for MegaExo w/ Pinch-bolt), MTB Afterburner (for MegaExo w/ Pinch-bolt), MTB V-Drive, MTB Comet (for MegaExo w/ Pinch-bolt), MTB Moto, MTB Gravity Moto X Quantity: 1 boltFSA Part No.: 390-2082Bolt Diameter: M18Buy FSA Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.