45-Degree Lock Miter Bits
45-degree lock miter bits create interlocking corner joints for boxes, columns, cabinet parts, drawers and furniture components. The profile increases glue surface and helps align the two pieces during assembly.
Choose by stock thickness range, shank size, cutting diameter and router table compatibility. These bits require accurate height and fence setup, so test pieces are essential before cutting project stock.
Use a router table, featherboards and multiple setup checks to keep both mating cuts aligned and reduce gaps at the finished corner.

Related guides: woodworking router bits guide, router bit types and uses, and router bit speed chart.
Use product filters and category links to compare size, shank, cutting profile, machine fit and application before ordering.