The Explorer Uni Disc 2.0 Pannier Rack from Topeak is a one size fits all rear pannier rack that has adjustable legs so that it can be fitted to most 24 inch to 29 inch mountain and touring bikes. This tough tubular rack is perfect for touring, commuting, or running errands in town. The MTX QuickTrack plate is compatible with any Topeak MTX TrunkBag, MTX rear basket, MTX 2.0 TrunkBag, and most other rack packs and panniers on the market.Attachment: Frame rack bossesMaterial: 6061 T-6 hollow aluminiumCompatibility: MTX QuickTrack & MTX 2.0 QuickTrack systemsMTX TrunkBags, MTX rear baskets & MTX 2.0 TrunkBagsMax Weight: 26 kg / 57 lbCapacity: Meets EN 14872 / ISO 11243)Added Features: Includes mounting bracket (26.5 cm) Adjustable length, Solid fender top, RedLite Mount, Tail Light Mount