Hoppe's No. 9  3-Pack Brush/Swab Kit, 12-Guage Shotgun Cleaning swabs are 100 percent cotton Spiral wound design Highly effective for cleaning bores Phosphor bronze brush Tornado brush and swab The Hoppe's No. 9 3-pack brush/swab kit includes cleaning swab, Tornado brush and Phosphor Bronze brush Hoppe's cleaning swabs are 100% cotton The Tornado brush has a special spiral-wound design that's highly effective for cleaning bores The Phosphor Bronze brush is most effective on lead Designed for use with 12-gauge shotgun