PolishStyl offers different kinds of structuring brushes. These brushes can be made with steel or tynex wire composed of abrasive grain in a nylon base). Steel wire are available in different size and types. This product is suitable for hard wood. The first passage scratches the surface removing the softer part of wood, breaking the wood fibers. Tynex is suggested for soft part of wood. The wire used is made of Silicon Carbid, grits are available from P36 to P1000.