With a hollow design, it can reduce weight and make cycling smoother.The hand-pull retractable design requires only fingers to pull gently, which makes it very convenient to take out the bag.Made of aluminum alloy high quality material and CNC cutting/anodized coloring, it is durable enough to use.The length of this front carrier block is 53mm, width is 66mm, and height is 70mm, and its mounting hole distance is 25.5mm.It is suitable for Brompton and for DAHON bicycle front bag mounting frame.Item Name: Front Carrier BlockMaterial:Aluminum AlloyStyle: ModernSize:7cmx6.6cmx5.3cm/2.76inx2.6inx2.09inNotes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:4 X Mounting Screws1 X Wrench1 X Front Carrier Block