AD 56314388 26" .065"/46 Grit Super Abrasive Cylinder Scrub Brush for Nilfisk Advance Convertamatic 26C Scrubbers. Our heaviest grit material for aggressive scrubbing of unsealed concrete. These brushes can also be used for stripping sealed concrete or painted surfaces. Long lasting .065" diameter Tynex-A or Hahls Nylon impregnated with 46 grit silicon carbide granules. High density 16 single row bristle configuration. Actual length is 24.875". Fits Nilfisk Advance Convertamatic 26 cylindrical scrub brush models which include 26C-C and X26C-C. Replaces Nilfisk Advance 56314388, 314388