A square bearing may look ridiculous, but the performance is nothing but spectacular. Most bearings quickly foul with the contact cement used to glue down high pressure laminates. That results in scratching, wavy edges, or burned edges. The square bearing-bushing simply slides along the countertop edge, so burning and glue fouling are a thing of the past. The new Laminate Trimmer bit is designed with the smaller cutting diameter and shorter cutting height needed for use in the smaller trim routers typically used for counter top work. These bits are not CMT! Made in New Zealand.