The Klutch 20-Pc. Bore Brush Set includes 6 nylon, 6 stainless steel and 6 brass brushes in 1/4in., 3/8in., 1/2in., 5/8in., 3/4in. and 1in. dia., plus a handle and 6in. extension. Designed for use with a power drill, this set offers versatile cleaning for pipes, tubes, and cylindrical components.
eBay