Upgraded rudder blade for TFL Genesis 900, Zonda, Popeye, Apparition, or ProMarine Skater. This fits TFL bracket assemblies, 502b20, 502b35, and 502b36 Wider blade design for better handling. Extra water pickup for added cooling. MeasurementsTop to Bottom: 110mmLeading edge: 86mm35mm in width at its widest point. Available in silver or black anodized color. Requires: Any needed fittings to convert your single-pickup rudder to a dual setup. Example: tubing and water inlets and outlets. Includes: Rudder blade only (see picture 1) with 4mm outlets (pn# tfl-521b11)Picture three shows this installed on a ProMarine Skater(boat is not included). Notes: Before ordering, check the rudder design to make sure this blade will work with your current rudder assembly/brackets.