The Gordon Brush 11ND is an acetal handle brush. This brush has a 0.012" stiff Nylon bristle with a Delrin (Acetal) handle. The Nylon fill material is hand-laced with Nylon twine into its handle for maximum fiber retention. Great for use within tight, narrow areas in applications where losing a bristle could create a problem. This high-quality brush has a 1 x 11-row configuration, with a 7/16" trim, and a brush face of 1-1/8" x 1/8". These thin-faced brushes are popular for cleaning, scrubbing, wiping, or dirt removal in delicate applications. Autoclavable for cleanroom, sterile, or medical applications.