Truly a jack of all trades, the DaKine Nylon/Cork Tuning Brush allows you to swap between brush and cork with the flip of a wrist. Use the cork side to apply and burnish paste waxes and powders, and the nylon brush side to expose and enhance base structure. 3.5 x 1.5'' (8 x 3.5 cm) working area on brush. 4 x 2'' (10 x 5 cm) cork. Material: Nylon.