Reinforcement of seat inclination. To ensure that Hamax child seats can be optimally mounted on various bicycles and frame types, Hamax offers different additional support brackets. Whether you want to increase or decrease the inclination of the seat, lower the position of the seat, or mount the seat on a bicycle with a small frame using an extended bracket, they always provide the right solution. Replacement brackets from Hamax in various designs. Purpose: universally applicable.