Do it Best 13 In. Cotton Twist Mop Refill - Hevenor Lumber Co.
Amazon.com: Rubbermaid Microfiber Twist Mop and 2 Refill Kit, Red, Built-in Wringer, Machine Washable and Reusable Mop Head, Light Weight, Clean Hard to Reach Places, for Laminate/Hardwood/Safe on All Floor Types :
Clorox Microfiber Twist Mop Refill, White - Newegg.com
O-Cedar MicroTwist Mop Refill - Shop Cleaning Tools at H-E-B
Amazon.com: Eyliden Twist Mop & Refills Kit, Hand Release - Dry & Wet Mops for Hardwood, Tile Floor Cleaning - Easy to Wring, Include 2 Replacement Heads, 57.7inch Long Handle, Top Scouring