The Milwaukee DropHead Cable (48-53-2572) is a 25 foot length of 5/16" cable constructed of industrial steel spring with a solid polymer inner core. This unique combination insures both strength and flexibility two essential factors needed when cleaning drains. It is also great at maximizing clog crushing force by carrying the speed and power through to the end of the cable. The added ability to maneuver around the tightest bends and the knowledge that Milwaukee Drain Cables won’t rust to their inner core are just 2 reasons why this cable may be just wat you need to get your job done right. Although this 48-53-2572 Drain Cable is the cable only it, like all other Milwaukee drain cables, can be purchased with a removable inner drum. The purpose of the drum would be to not only help to prevent cable bind up, but it also is good to reduce the mess associated with cleaning drains. This cable is not only compatible with the Milwaukee M12 Drain Snake, but it also works with other drain cleaning machines too. This cable is backed by a 2-year warranty against manufacturer defect as well as breakage.