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This square insert is 15mm wide and has straight edges on each face. This insert is used with the Bear Tooth™ Carbide Turning Tool.

The center hole is sized for use with a #10 screw.

This insert can be used with the old Woodchuck Pen Pro and Woodchuck Uni-Tool. These tools are no longer carried by Bear Tooth Woods, but the Bear Tooth™ Carbide Turning Tool is an equivalent replacement.

This insert will not work with the Easy Wood tools. Use the appropriate 11mm carbide inserts for Easy Wood tools.