This is a Litepro aluminum rear carrier for Brompton bikes. I purchased it with the intention of switching to a mini-carrier when I removed the fenders, but I ended up going without a carrier, so I never installed it. Please note that the mounting bolts, etc., were not originally included. According to the store's website where I purchased it, the dimensions are as follows: 　Length (front to back): 26.2cm 　Maximum width (width of the rear part where the wheel attaches): 16.8cm 　Weight: 185g ※ I generally ship within 24 hours, but I will contact you if I am unable to ship within 24 hours due to absence, etc.