The Lightning Bolt-On Axles offer a low profile and lighter weight alternative to conventional thru axles with levers. Features: Rear Lightning Bolt-On axles offer a stronger, more durable, lower profile and lighter weight option to replace your stock thru-axles No more bulky handles to strike trail obstacles. Aerodynamic design Internally bored to remove unnecessary material without compromising strength Requires a standard 6 mm hex wrench for easy installation and removal Specifications: Front/Rear: Rear Thread Pitch: 1.5mm Overall Length: 159mm Axle Diameter: 12mm Color: Black