Need something other than the heavy-duty brush that came with your Prolux Core? Try out this light-duty brush for more gentle cleaning! Like other Prolux Core brushes, this works great on all hard-floor surfaces. We also sell a medium-duty brush for a tougher, but not too abrasive cleaning. Think of it like a toothbrush - stiffer bristles means deeper cleaning but can also hurt your gums, so choosing the right hardness for your application is important for clean, long lasting floors! WORKS WITH THE 13" CORE MODEL ONLY (Only compatible with units purchased in 2021 and older)