AL 0765-277 / 7-08-03284 21" (20.75" Diameter) Scrub-Grit 3 (Cleangrit Equivalent) Disc Scrub Brush with Mounting Lugs for American Lincoln 7770, SR7770, SR7770HC Scrubbers. A mildly aggressive filament. Designed for medium or general duty scrubbing of sealed and unsealed flooring. Removes forklift tire marks, lightly packed dirt and debris without harming sealed flooring. .035" / 180 grit Tynex-A or Hahls Nylon with embedded silicon carbide granules. Includes attachment lugs (7-45-05026). AL 7770 requires 3 disc brushes. Priced Each. Replaces Nilfisk American Lincoln 0765-277 (Brush with Lugs Attached), 7-08-03284 (Listed in parts book as brush only - we supply the attachment hardware - Brushes are ready to clip on). Replaces Nilfisk American-Lincoln 0765-277. Our Part Number AL 0765-277