H&H Front Carrier Block V2 for Brompton + H&H Carrier Block GoPro Adapter for Brompton Bicycle Aluminum front carrier block for BROMPTON bicycles. A front bag mounting adapter that combines weight reduction and color accent. Compatible models: BROMPTON only. Material: Aluminum Weight: 58g https://www.fantastic4toys.com/collections/bag-carrier-block/products/h-h-unibody-cnc-front-carrier-block-v2-for-brompton-bicycle https://www.fantastic4toys.com/collections/bag-carrier-block/products/h-h-carrier-block-gopro-adaptor-for-brompton-bicycle