FlexSweep's Auto-Flex Connector is designed to make cleaning as easy as possible. The flexible connector swivels 360 degrees allowing the mop to smoothly swivel and naturally return to center. There is no metal with springs or rivets that jam, break, or corrode. Closed Loop Cotton Dust Mop washes better than cut-end dust mops that fray when washed. For large messes, we recommend using the Cushion Microfiber Dust Mop and then finishing with the Closed Loop Cotton Dust Mop.