Naveen Hydrocontrols offers Ball Mandrel Held by Detents. Naveen Hydrocontrols is an ISO 9001-2000 certified company. Ball Mandrel Held by Detents provides maximum support to the outside wall of the tube to avoid tube flattening during to the process of bending. Balls are held by detents in a straight line position for easy loading of tube ball and link design provides maximum tensile strength to resist stretching or breakage. Ball Mandrel Held by Detents is free to rotate, distribute wear and give maximum tool life. Balls and links can be added or removed easily.