The Lightning Bolt-On Axles offer a low profile and lighter weight alternative to conventional thru axles with levers. Available front and 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 Require a standard 6 mm hex wrench for easy installation and removal Manufactured in the USA to the tightest tolerances using aerospace materials and CNC manufacturing Compatible with Shimano 12x148 E-thru and other axles with the same dimensions