Blue Nylex 5 Level Soft Fiber Brush Magnolia 187-B Five Level Five Level Blue Nylex Soft Brush. Ideal for your gel coat washing, 5 level design with soft fibers. Fiber is staple set in an 7 3/4" black poly flow-through block that accepts a threaded handle. Handle sold separately. Overall length: 11.25"; Trim: 2 1/2" (1 3/4 side).Although this brush is recommended for use on all types of finishes, some finishes may be more susceptible to scratching more than others, always test in an inconspicuous area before use. Fits into 5 gallon pail.