There are many categories to Swix's Brush line up. Within the highest end racing brushes are those specifically designed for use with Cera F Wax. The Wild Boar Oval Brush is recommended for use as the second brush for Cera F wax applications. The Wild Boar can be used in place of a Horsehair brush, and run 5 to 10 strokes tip to tail after running the Stiff Black Nylon Brush. Because of the differences in wax properties it is highly recommended that brushes used for Cera F are kept as strictly Cera F brushes. Oval Paddle Brush with Hand Strap, Recommended by Swix as the Second Brush on Cera F Applications: 5 to 10 strokes, 0.15 mm Fibers, Shape: Oval, Bristle Type: Natural Fibers, Model Year: 2019, Product ID: 178415, Model Number: T0164O, GTIN: 7045951415117