Tomo Max Keel Fin SetFirewire Tomo Max Keel Fin Set The performance sweet spot between Twin and Keel templates. The Tomo Max Keel is Daniel Thomson's twin template that offers the trim of a keel with the response of a twin. Tight radius turns in the trough and clean control across the face, this template is Tomo's ultimate Twin Keel shape, crafted from a blend of traditional keel templates and performance twins. This template has more surface area than any Twin fin, and