Grippers are slit through the metal pipe and pneumatic bladder is used for inflating. The grippers give positive holding of the core. These shafts are strong & ridged, Standardized design allow us to manufacture the shaft in any size diameter, The same design can be offered for heavy duty to light capability shaft, Simple design ensuring a long service, Staggered lug design makes it best in winding application. Each gripper offers a designed chamfer for easy core insertion, Dimensional tolerance of journal is very tight for better fitting & rigidity during operation.