For 26", 27.5"(650B) & 700c wheelsStrong tubular aluminum rack with QuickTrack(TM) system for all Topeak MTX TrunkBags and MTX Rear Baskets. Fast, easy mounting of BabySeat(TM) without use of tools.Max. Weight Capacity25 kgs / 55 lbsAttachmentsBraze-On TypeMaterial6061 T-6 Tubular AluminumBag CompatibilityMTX QuickTrack(TM) SystemAdded FeaturesSolid Fender TopRedLite MountTail Light MountSize (L x W x H)34 x 17 x 40 cm13.4" x 6.7" x 15.7"Weight580 g / 1.27 lbsArt.no.TCS2016