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ISIS cranks have been around a long time, and they're still a great design. If you've got one, keep it in top working condition with these quality crank bolts from FSA. - ISIS-compatible - M12

This is an FSA Self-Extracting Left Crank Arm Bolt for Mega Exo ATB Cranks - 30mm long - 14g - Designed to fit FSA ATB cranks only - Includes M18 bolt, M27 self-extracting cap and washers