This router bit is a must-have for any industrial or scientific setting. It is perfect for flattening and surfacing any board, and the results ARE always precise and smooth. The bit is durable and can withstand heavy use, ensuring that it lasts a long time.The only downside is that it may be a bit expensive compared to other router bits on the market. Nonetheless the quality of the product more than justifies the cost. Overall, highly recommended for anyone in need of a high-quality router bit..