Loop-End Design : 18oz mop head with looped-end , yarn tailband prevent the loops from and reduce fraying. And it also helps the loops flat on the floor for maximum area contact Installation : Thumb wheel can be screwed up or down for helping release the mop head or tightly clamp the mop head down into the position . A side gate for easily remove and replace mop head, Simply open the , slip the mop head into the position ,then clip the gate tightly Double Thick Cotton Yarn : We choose very Cotton as material , highly versatile mop is to absorb any dirty water quickly and clean all types of mess . it make your cleaning more easily . Multi-purpose use : Our versatile wet floor mop is perfect for commercial and home floor cleaning jobs . It can be used to clean tile floor, marble floor, concrete floor, and wood floor.