The carlisle 4 inch flo-pac® floor drain brush (4014700) is a head for a floor drain brush that can be attached to a threaded handle for fantastic cleaning potential. the bristles of this brush head are made of polypropylene, so they're sturdy, strong, and ready to clean up any and all of the messes that accumulate during the course of business. carlisle - 4014700 - 4 inch flo-pac® floor drain brush is bpa-free so it can rest near food and kitchen equipment safely.