Product details:

Mal-grit brushes offer solutions to a wide range of cleaning situations. Silicone carbide impregnated nylon bristles are self-replenishing as brush wears, offering unmatched value that outlasts floor pads over 100 to 1 that translates directly into time and cost savings. Featuring our water and chemical resistant tuff-block for maximum life expectancy. All grit brushes must be run in a wet environment. Trim length: 1-1/2in. Clean-grit is an excellent general scrubbing brush for frequent maintenance cleaning. Flexible enough for cleaning narrow grout lines and uneven surfaces. Note: clutch plates and risers are sold separately.