Compatible with the MTX BeamRack series, the Topeak MTX dual-sided frame makes it easy to carry clothes, gear, groceries, and whatever else you want on the rear of your bike. The frame connects easily to the BeamRack, with a twist knob for security. Once attached, the frame lets you connect MTX DXP or EXP trunk bags on either side of your rear tire. Designed for commuting or touring use, the dual-sided frame measures 11.6 by 12 by 0.8 inches (W x H x D) and weighs 0.66 pounds.