For M and L size framesFor MTB or heavy commuting use. Improved QR mechanism is more secure and easier to use. Compatible with all MTX Trunk Bags, 20 lbs. carrying capacity. Includes two rubber bungees and safety reflector.ClampQR fits 25.4~ 31.8mm (shims Incl.)MaterialAluminum BeamBag CompatibilityMTX QuickTrack(TM) SystemMax. Weight Capacity9 kgs / 20 lbsAdded FeaturesRubber BungeeSafety ReflectorRedLite MountTail Light MountSize (L x W x H)54 x 12.7 x 8.1 cm21.3" x 5" x 3.2"Weight680 g / 1.50 lbsArt.no.TA2096V