NSS 2694521 13" .050/80 Grit Disc Scrub Brush for NSS Scrubbers. .050" diameter Tynex-A or Hahls Nylon impregnated with 80 grit silicon carbide granules. An aggressive brush designed for tough scrubbing and stripping jobs. Replaces brown and black floor pads. Includes 3 drive lugs. 5.53 center hole. 12" diameter brush block. Usually black or purple in color. 2 brushes required. Priced each. Fits NSS Wrangler 2625DB, Wrangler 26, Wrangler 26-VS Walk Behind Floor Scrubbers. We also offer a lighter mid grit scrub brush (Use our NSS 2694481) Replaces NSS 2694521. Our Part Number NSS 2694521, 26-9-452-1