CL 51450D 20" .060"/80 Black Grit Scrub Brush for Clarke Floor Scrubbers. Low profile, dual direction, stiff .050" diameter .060"/80 Black Grit (80 grit) scrub brush with clutch plate for Clarke floor scrubbers. .060"/80 Black Grit brushes can be used many surfaces for daily heavy duty scrubbing tasks on surfaces such as unsealed concrete, unpainted or older shop floors, and older sealed concrete with moderate to heavy debris. Designed for heavy duty use, this brush can be used for stripping jobs on terrazzo and tile. Great for cleaning grout lines. Durable black or purple DuPont Tynex-A or Hahls Nylon filaments are impregnated with 80 grit silicon carbide granules. If you need a stiffer grit brush for heavy duty scrubbing or stripping jobs, we offer a .065" .065"/46 Heavy Grit scrub brush. Please call order this brush and reference .065" in the special instructions box during checkout. You can also call 800-277-3780 if you need a special grit brush. 18" diameter block ensures proper clearance. Fits Clarke floor scrubber models including Vision 20, Leader 2000E/2000B, Encore 20 Series (L20, S20 and S20E) scrubbers. Please note that some older Leader 2000 series units take a snap on gimbal instead of a twist on flat clutch plate. Please check your model before ordering. One pad driver required per unit. Priced Each. Replaces Clarke 51450D. Our Part Number CL 51450D