The Milton Bell kit is perfect for drive-thru applications, residential driveways and, industrial locations. The "Complete Milton Kit" includes all of the pieces necessary to set up your driveway alarm system. The driveway signal bell kit includes one Milton 805 driveway signal bell, one Milton driveway signal hose, and one heavy-duty rubber hose plug. Your Milton driveway signal bell will have a patent date of May 12, 1959 listed on the back of the bell. Available in hose lengths from 25’-300’!