9-Piece 45° Lock Miter Router Bit Set

Build Clean, Interlocking 90° Corners

This coordinated nine-piece lock miter router bit set includes three matched sizes, with three bits of each size, and cuts matching profiles that help two boards align into a strong 90-degree corner. It is designed for boxes, drawers, cabinets, hollow columns and other woodworking projects where repeatable alignment matters.

Three Matched Cutting Sizes

• The 1/4 in shank set covers approximately 1/2 in, 5/8 in and 3/4 in cutting heights; the 1/2 in shank set covers approximately 1/2 in, 3/4 in and 1 in cutting heights.
• Choose a 1/4 in or 1/2 in shank to match a compatible router or router-table collet.
• Carbide cutting edges for clean, controlled cuts in common woodworking materials.
• Suitable for hardwood, softwood, MDF and particleboard.
• Interlocking profiles increase glue surface and help the joint self-align during assembly.

Setup for Accurate Results

Use a router table and test the cutter height and fence position on scrap material before cutting project pieces. Feed the two mating boards in the correct orientation, make small adjustments, and confirm a flush dry fit before applying glue.

Package Includes

Nine lock miter router bits in the selected shank size: three pieces of each of the three cutting sizes. Cutting-height ranges vary by the selected shank option.

Safety Notes

Wear eye and hearing protection, follow the router manufacturer's operating instructions, and disconnect power before setup or adjustment. Confirm that the selected 1/4-inch or 1/2-inch shank matches your router collet. Do not use on metal, stone or unsupported handheld work.