We are offering slip-on set screw stop collar. Slip on set-screw type is a one-piece stop collar. Crimson also offers a premium one-piece stop-collar, with set screws for superior holding capability the outside ends of these collar are generally tapered to a degree which helps to hold the centralizer and avoid the ends to hit the bows vanes when the centralizers are placed over them. The slip on set screw stop collar are available in sizes 2 78" to 20"