TN 386241 47" 20 Single Row .060" Super Grit Abrasive Bristle Scrub Brush for Tennant 7300 & 8300 Max Pro 1200 Series Scrubbers. Super abrasive .060" diameter nylon impregnated with 80 grit bristle for tough scrubbing/stripping jobs on unsealed and some sealed flooring with heavy dirt and debris. Splined drive. We can also make these in a .035"/180 mid grit (Please reference .035 in the special instructions box at checkout). 2 Brushes Required. Priced Each. Replaces Tennant 386241. Our Part Number TN 386241