PB 7519 13" .035"/180 Mid Grit Splined Drive Grit Scrub Brush for Minuteman Power Boss Phoenix 26, Phoenix 28, E26, E26 Eco, H26, ER 26 (E Ride 26), Admiral 26 Disc Brush Model Floor Scrubbers. .035" blue Hahls or DuPont Tynex-A or Hahls filaments impregnated with 180 grit silicon carbide granules are used for heavier general duty scrubbing on unsealed concrete, tile, ceramic tile, terrazzo, rubber, and sealed concrete with moderate to heavy dirt and debris. Equivalent to Heavy Duty Brush / Poly Grit Brush. Replaces blue floor pads. 18 splined center drive with 6 locking "fingers". 13" (330mm) brush block diameter. Fits Minuteman E26, H26, Phoenix 26 walk behind scrubbers and Minuteman Power Boss Admiral 26 and E Ride 26 disc brush model riding floor scrubbers. Will not fit Phoenix 28XL and Admiral 28 Plus (use PB 3313125). Two disc brushes required. Priced Each. Replaces Hako 7519, Minuteman Power Boss 7519. Our Part Number PB 7519