짱짱맨. It's very good item for brompton.
Weight of rack: 150g. Weight or rack + 4 wheels + 4 screws: 260g. Rack quality needs to be improved. Please use a Jig/Template to hold parts during welding. Welding had cause distortion due to thin wall and poor positioning. Some burrs were still on the drilled holes and edges. Seller to some effort to secure end with screw to minimise bending during shipment. I have to say it was delivered pretty quick though. 5 stars for shipping. 3 stars for product.