Rust- Metal Fixed Shell: Built with a , rust- metal shell that provides excellent tension and elasticity to firmly hold the bristles in place. This strong housing prevents deformation and keeps the brush working smoothly under repeated use. High-Density Polyester Fiber Bristles: Packed with countless high-quality polyester fiber bristles, this rope cleaning brush delivers dense, uniform contact with the rope . The moderately soft bristles effectively remove grime without damaging the sheath. Climbing Rope and Clothesline Cleaning Brush: Designed for 8-15 mm ropes, this 360° all-round cleaning brush deeply scrubs every side of your climbing rope and clothesline. It helps remove dust, mud, and grit more efficiently than a regular brush or washing machine, saving you time while extending rope life and maintaining performance. Designed for 8-15 mm Ropes: Ideal for most standard climbing ropes and household clotheslines with diameters from 8 to 15 mm. For thinner ropes at the lower end of the range, you can fix and rotate the rope in sections for more effective cleaning.