[For 1-Tank System]: The mop replace heads, mop base and mop handle set is ONLY compatible with EasyWring Microfiber Spin Mop. NOTE: The repalcement parts only compatible with 1-Tank system, NOT compatible with 2-Tanks RinseClean system. [1 Cleaning Brush]: The brush is crafted with three layers of stiff bristles designed to clean up stubborn stains, and paired with the microfiber mop head, cleaning results are 99% more effectiveAvoid use on sensitive wood floors.