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 Use the Robert Axle Finder (below) to find the correct axle When multiple axle lengths are listed, the axle includes a spacer. The two lengths are with and without the spacer Designed, tested and made in Bend Oregon Specifications: Front Rear: Rear with hanger Description: 12mm Lightning Thru-Axle Brand Fitment: Cervelo R.A.T. Axle Length: 142mm Thread Pitch: M12