Lightweight low profile solution for mountain commuting and fitness bikes. Hand-welded 10.2mm tubular 6061-T6 alloy construction. Ultra-narrow profile improves aerodynamics keeps loads closer to center and greatly reduces bag `swing`. Mounts to rear caliper bolt or frame and quick release axle skewer eliminating the need for braze ons. Ample space for MTB and Hybrid/Trekking fenders. Fits 26` up to 700c wheels. 110lb weight limit