TN 399232 25" 18 Single Row .050"/80 Grit Cylindrical Scrub Brush for Tennant Speed Scrub 2601 Cylindrical Brush Model Scrubbers. .050" diameter Tynex-A or Hahls Nylon impregnated with 80 grit silicon carbide granules. An aggressive scrub brush used on unsealed concrete where heavier dirt and debris are found. Great for removing forklift tire marks, packed dirt, beverage stains and other hard to remove soils. Fits Tennant / Nobles Speed Scrub 2601 cylindrical brush model scrubbers. 25" Length, Splined Drive. Two brushes required per unit. Priced Each. Replaces Tennant / Nobles 399232.