Great for copying patterns with a template. Your template can be on the inside or the outside of the cut. Bearing size is 3/4 to match the cutter. If you have a large template job these are the way to go as the cost per edge goes down as you use them.American made industrial quality bit. The item "Carbide tipped indexable template bit, 3/4 D, 1/2 shank" is in sale since Friday, June 10, 2016. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Woodworking Supplies\Other Woodworking Supplies". The seller is "machacc" and is located in Belleville, Wisconsin. This item can be shipped worldwide.