PFERD scratch brushes are manufactured to exacting standards on state-of-the-art production equipment. This ensures that all wire tufts are precision-located on the block to ensure uniform and consistent brushing performance, and long service life.PFERD BRUSH premium hardwood scratch brush blocks are kiln-dried to keep wire tufts firmly in place, and hand-selected to ensure straightness and quality.The hardwood curved-handle scratch brush is a quality brush for maintenance applications. Removal of rust, paint, scale, dirt and other debris. Cleans metal parts, threads and much more.