A characteristic feature of the sanding block are the two working surfaces: white and black. The white surface is used for fast simple surface treatment, is characterized by high hardness and very low compressibility. The black surface is used for grinding delicate arches, cavities and all profile elements. The material used for the manufacturing of sanding blocks has a very low surface tension. It avoids the adhesion of the paint particles to the surface, easier cleaning and preservation aesthetics. Thanks to that the productivity of the sanding block is incomparably greater than of other similar products available on the market.