PB 7094 27" 18SR .035"/180 Mid Grit Cylinder Scrub Brush for Minuteman Power Boss Phoenix 28 / 30, Admiral 28 / 30 (Cylinder Brush Models Only). These cylinder brushes are manufactrued on heavy duty ABS plastic core with stiff .035" diameter crimped Tynex A or Hahls or Hahls nylon filaments with heavier 180 grit silicon carbide granules imbedded within. The 26-7/8" cylinder brush cores are splined, 8 on one end and 9 on the other. These brushes are great for light scrubbing of most flooring including older painted shop floors, textrued shop floors, older polished concrete, unsealed concrete, tile, and older epoxy painted floors. We also offer a less aggressive grit scrub brush with .018"/500 grit (Use our PB 7099). Fits Minuteman Power Boss Phoenix 28, Phoenix 30, Admiral 28, and Admiral 30. Also fits Hako Hakomatic B90, 750R, B115 WB 700 (70cm - 691mm) cylinder brush model floor scrubbers. Will not fit Phoenix 28XL or Admiral 28 Plus (use or PB 281529). Listed as Medium Duty. Commonly grey in color. Two brushes are required. Priced per cylinder brush. Replaces Hako Minuteman Power Boss 99709400, 7094