Great for pattern and template Routing. For increased work piece visibility, use the shank bearing flush trim bit in a handheld router allowing the template to be positioned on top of the work piece. In a router table, template will be positioned underneath the work piece. Can be used without the bearing as a standard straight bit. 2-flute carbide cutters with enclosed ball bearing. 1/2 in. shank. Flush trim router bits are of the most utilized router bits in the workshop and are extremely easy to use. Veneers and finishes are trimmed down to match the size and contour of the material it is applied to and cabinet face frames are trimmed to be flush with cabinet end panels and any other flush trimming application. As a general rule, larger diameter flush trim bits produce the smoothest finish but reduce the ability to fit into small spaces. It is best to have a variety of sizes to best suit your application.