●Finally, the set includes a 100mm long cork brush. It is suitable for applying highly fluorinous powders and fast sliding varnishes. Use these brushes with a normal drill and the rotating brush handle. Set the drill to a low speed (800 to 2500 rpm). ●The set also includes a 100mm long horsehair brush. This is used for brushing out hard and medium hard wax. Horsehair Bristle Length: 6mm ●The rotating brush set for skis includes a 100mm long soft yellow nylon brush. This brush is used for polishing overlays and soft waxes. Yellow Nylon Bristle Length: 10mm ●The rotating brush handle is 100mm long and has a removable safety shield. It features a large ergonomic handle and the removable hex shaft rolls smoothly on sealed bearings. Compatible with all SKS, Swix and Toko 100mm rotating brushes. ●Includes a durable carry case.