Durable and reusable Includes 3 pack replacement mop heads for your spin mop, designed to last for about one year with normal use. Exact fit replacement mop head for Spin Mop system. Inner triangular rim size: 4 inches; outer triangular rim size: 6 inches in diameter. Made of 100 percent microfiber, durable and machine washable. This mop head refill will not scratch the surfaces you're cleaning. Microfiber effectively removes and absorbs tough dirt and grime. Multipurpose for smooth surface floors such as wooden floors, ceramic tile, laminate floors, marble floors, and other sealed hard floors. Also suitable for washing your car. Machine washable Toss in the washing machine to renew the fiber and reuse. Use scenarios Regular floor cleaning in homes with wooden, tile, laminate, or marble floors. Kitchen or bathroom grime cleanup on sealed hard floors without scratching. Exterior car cleaning tasks to wash the car efficiently.