Oneway 2136 Stronghold Chuck Jumbo Jaws. This set of Jumbo Jaws is for light finishing of the backs of bowls and external chucking on platters and picture frames. The variety of slots and holes allow for holding an almost infinite number of shapes. Jaws can also be used to mount and turn wooden false jaws for precision finishing, extremely large, or critical applications. Jaws are machined from a solid piece of aluminum for higher strength. Work with 13" swing or larger lathes. Canada Jumbo Jaws Specifications: External chucking capacity is 2-3/4" to 11". Internal capacity is 4-3/4" to 12". Model: 2136