Rubbermaid Commercial Products #24 Blend String Mop Plus 2-Pack Mop Head Refill Combo 1974341-R - The Home Depot
Amazon.com: Contec Vertiklean Polyester / Polyester Foam Wet Mop Head - 12.75 in Overall Length - 4.25 in Width - TMVKMOP [PRICE is per BAG] : Health & Household