Flowform Collection Ff01. Monoblok Long a market leader in forged wheels, HRE gives its FlowForm ® line of wheels with iconic styling and a level of quality embodied by the HRE brand, all at an accessible price point. This cast flow formed wheel is crafted with the highest level of design and engineering available in the world today. Finishes Shown: Liquid Metal and Tarmac *By request/order. *Price per piece.