New Master Plates from Carr Lane are ideal for machining large thin-walled parts. Made in three sections that mount on a professional chuck similarly to top jaws, the plates accept a wide variety of machinable jaw segments. The plates are available for chucks from 10" to 60" diameter, in standard height and extra high. Made of aluminum alloy, the plates' mounting pattern is machined to your chuck's specifications when you specify make and size of chuck when ordering.