Includes : 18 Spiral Tube Brushes - 6 Brass - 6 Stainless Steel - 6 Nylon. Mounted on 1/4" Hex Shafts. Fits standard screw bit drivers, and Extensions. Overall length 101mm, Brush length 50mm. Sized for cleaning Bore Sizes from. 17 Caliber to 12 Gauge.
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