TRUE AMES RYAN LOVELACE TWIN KEELS - GLASSTRUE AMES RYAN LOVELACE TWIN KEELS GLASS Designed to work fluidly with performance style twins, Ryan Lovelace designed these fins to bridge the gap between a typical full size keel and a more upright late 70's style design. This template will give you the ability to connect long drawn out lines in solid surf while retaining that smooth twin fin feeling. HEIGHT: 5. 125" 130mm BASE: 5. 75" 146 mm AREA: 21. 96 141. 69 cm