Robert Axle Project Lightning Bolt-On Thru-Axles. Features: Lightweight thru-axles, providing a better alternative to stock axles Low profile design with a clean appearance Machined to the highest standards in the industry Not compatible with trailers or trainers Designed, tested and made in Bend Oregon Specifications: Front Rear: Front Description: 12mm Lightning Thru-Axle Brand Fitment: Various Axle Length: 120mm Thread Pitch: M12 x 1.5