Starbrite&';s Extend-A-Brush Heads are the utility brush of this generation. Designed of fibers that do not stain, discolor or become brittle, and resists most cleaning chemicals and withstands heat up to 200F, this brush is the ideal marine cleaning tool. Great for non-skid and textured surfaces High density, stiff corrugated Star prene fibers quickly break down heavy dirt and stains This space-age material will not rot, mildew or absorb odors Will fit all Extend-A-Brush handles Heads Available in Soft, Medium, Coarse