Oneway Stronghold Chuck #3 Tower Jaws, Profiled are expertly machined to a depth of 1-1/4", providing maximum gripping power and strength essential for handling large bowls and vases while minimizing damage to your workpiece. The increased depth greater when working on the back of your projects. Featuring a patented profiled design, these jaws eliminate the need to get the spigot close to the design diameter, unlike traditional serrated jaws. The top of the internal profile is dovetailed without serrations, making it i for non-marking applications, such as when you want to leave the tenon on the bottom of a bowl as an aesthetic feature. Designed in Canada, these jaws fit spigots ranging from 3-5/8" to 5" externally and recesses from 4-3/8" to 5-7/8" internally, ensuring versatile use for your woodworking needs. Model Number: 3603