ATB abrasive nylon cup brush with round trim. Heavily filled with round nylon filaments. Filaments are impregnated with Silicon Carbide grit. Ideal for surface finishing and deburring. Applicable for engine blocks, cylinder heads, exhaust manifolds, transmission housings, water pumps and intake manifolds, bulk heads, wing spars, engine housings and components, hydraulic valve bodies, machine components, housings, gears and castings. 1-1/2" Trim length.