This ROUTER bit is a game-changer for anyone who wants precision in their woodwork .The double straight design delivers smooth cuts in dual directions and the 4-inch size is perfect for those hard-to-reach areas. The durability of this bit is impressive, as it is made from top-notch carbide material that lasts longer than most. Itβs an essential tool in the Industrial and Scientific world. However it might not be suitable for beginners, as it requires a high level of experience to use..