VERSATILE: Best for smooth surface floors such as wooden floors,tile,laminate,marble and other sealed hard floors,the mop refill is soft and won't scratch the surface you're cleaning,and it's also great for car washing,window cleaning,and more. HIGHLY ABSORBENT: 100% premium microfiber with strong water absorption capacity,ideal for wet or dry use,the microfiber mop head easily removes and absorbs stubborn dirt and grime,durable and machine washable. EASY TO INSTALL: With a simple snap-fit ​​installation,the dimensions are 3.9" in diameter and 5.7" in diameter on the outer triangular side,our special design gives you more stability when installing and cleaning,please note that the mop head is not compatible with the 2-tank system,Fits perfectly with 1 can mop system. REUSABLE AND ECO-FRIENDLY: The Microfiber Mop Replacement Head is machine washable and easy to clean,freeing your hands after heavy housework.Just put it in the washing machine and air dry,then you can refresh and reuse for a cleaner clean,economical and eco-friendly! BUNDLE INCLUDES: You get 4 mop heads for 12+ months of normal house cleaning,easy-to-clean mop head replacement,the best value package.Tips: It is recommended to replace the mop head every 3 months.If you have any questions about the product,please contact us,we will give you a 100% satisfactory solution within 24 hours.