Oneway Stronghold Chuck #6 Aluminum Jaws, Profiled are designed with a lightweight aluminum alloy, making them for securely holding platters and shallow bowls that feature a large foot or recess. These jaws utilize Oneway’s patented profiled jaw configuration, which ensures maximum gripping power while minimizing any potential damage to your workpiece. They are for use with platters up to 36 inches in size or bowls with a maximum diameter of 26 inches and a depth of 6 inches. Specifically made for the Oneway Stronghold Chuck, these jaws precise external compression ranging from 6-1/8 inches to 7-3/8 inches, and internal expansion from 6-3/4 inches to 8-3/8 inches, providing versatile and reliable holding capabilities for your woodworking projects. Model Number: 3779