. Quick and Easy to Fit Securely . TetraRack has a mounting length of 200mm . Level Top Plate: independent of the seatstay angle with adjustable struts . Secure Fit: adjustable straps with padded feet securely attach rack to seat stays . Compatible: with Topeak QuickTrack system bags . Rear Reflector: clamp (not supplied) *Important Mounting Information and Warnings . Seatstay needs to have a diameter greater than 15mm . Compatible: with seatstays width within 75-105mm . Weight Capacity: do not to exceed max weight capacity 9kg . TetraRack is not recommended for carbon forks and seat stays . TetraRack series racks are not compatible with front or rear mounted V-Brake type systems . Seatstays and front forks must not contain any obstacles that prevent mounting TetraRack securely Specifications . Attachments: Seatstays with rubber feet and hook-and-loop straps . Adjustment: Strut slots . Material: Aluminium / Engineering grade polymer / Nylon straps . Compatibility: Topeak MTX / RX TrunkBags . Maximum Load: 9 kg . Added Features: Clamp for rear reflector, Tail Light Mount . Size: 39.5 x 30 x 12 cm . Weight: 870 g