Constructed with Dura-Lon color fast synthetic yarn which is more durable, cleans easier and dries faster than cotton dust mop yarn. Simple rinsing and drip drying will suffice in most cases. Dura-Lon yarn has built in static attraction characteristics for quick dust pickup, requires no treatment chemicals. Keyhole square end has surged construction, keyhole backing with snaps. Individually polybagged in cartons of 12.