Duotone Foil Fusion Handle 2025. UNIT 25 COMES WITHOUT HANDLES OR BOOM. The Duotone Fusion Handle listed here is Lightweight Carbon construction with a Flush connection to the strut-attachment and Oval Carbon tube (diameter ca. 22.5mm/26.5mm) The Pro Fusion Handles are Ergonomic hand angles, easy to find hand positions and Smaller packing dimension... Available from H20 Sports...