The Micro-Bore and Valve-Guide Brush Sets, eight-piece sets of small-diameter brushes in stainless steel and brass, are designed for convenient cleaning of tubes, bores, valve guides, and more.

Each set includes 9-inch-long brushes in 1/8 inch, 5/32 inch, 13/64 inch, 1/4 inch, 5/16 inch, 3/8 inch, 7/16 inch, and 1/2 inch diameters. The twisted wire can enhance cleaning action, while the flexible shafts can be useful for hard-to-reach applications. Each brush is fitted with a large finger loop for enhanced control.