Weiler brushes are designed for industrial use. These quality brushes are made with the finest materials, yet Pairiced to give the lowest cost-per-use. Weiler's solid ring construction ensures that the brush will run smoother and last longer, even in the toughest application situations. Deburring, cleaning, finishing.Cleaning of internal surfaces and hard-to-reach areas.Edge blending.Clean and polish I.D. and O.D. surfaces.Roughening for adhesion.Wide usage in aircraft, aerospace, naval and nuclear work. 1 Each