As an industrial and scientific buyer, I am always on the lookout for effective cutting tools to add to my collection. Thanks to my knowledge gained in practice I can confidently say that this 16-inch diameter mortise drill bit from CMT fits the bill perfectly .The bit`s sturdiness and precision make it a great option for my heavy-duty jobs. The only drawback is the price, but i BELIEVE it's worth the investment for its quality and longevity..