Swix Combi brush. 2-in-1: One part coarse white nylon / one part a mix of medium brass and coarse nylon. An all purpose brush for soft and medium hard waxes. This brush will help you take care of two steps of ski base preparation ( can also be used with Alpine Skis and Snowboards). Use the Bronze half of the Brush before applying wax to your skis and use the Nylon half to buff and polish your bases after you apply the ski wax. Swix Code: T0159B.