This router bit with a 1/4" shank is a powerful tool for creating intricate keyholes in wood. It glides smoothly and cuts through the material with ease, leaving a clean finish .The bit is durable and can be used for multiple projects. However, it requires some experience to handle it properly, and it may break if not used with caution. All in all, this industrial and scientific tool is a must-have for any woodworking enthusiast looking to create beautiful and functional pieces..