Aggressive brush. Suitable for difficult brushing jobs in metal joinery, such as descaling, derusting, deburring, cleaning weld seams and removing adhesive residues. Materials that can be machined : Cast iron. Wood. Steel, cast steel. Application : à‰burring. Cleaning. Varnishing. derusting. descaling. à‰ removal of oxidised layers. Working weld seams. Machining fillet welds. Machining the bottom pass.