Open end clamps are of the same general construction as the preformed clamps with this exception, the double wrapping of the band around the hose or article is a part of the application. The open end clamps are used when one end or both, of the article to be clamped is not free, or an obstruction prevents slipping a preformed clamp over the end. Open end clamps range in size from 13/16" I.D. to 48" I.D.