Authentic Steel Spiral Cleaning Tube BrushSizes Available: 3/8, 1/2, 5/8, 3/4, 7/8, 1, 1-1/8, 1-1/4, 1-3/8, 1-7/16, 1-1/2, 1-5/8, 1-3/4, 1-7/8, 2, 2-1/2, 3, 4 & 6 inches1/4 NPTUsed in power operations where polishing, surface conditioning, deburring, and cleaning operations are neededIdeal for aggressive cleaning and deburring on steel, armored steel, cast iron, ductile iron and tool steel parts.Made with steel bristles