i recently purchased a set of router bits for my woodworking projects and I must say I am very impressed with their performance. Based on my observations, these bits are durable and provide precise cuts. The industrial and scientific design of these bits is evident in their smooth operation .The only con I could find is that they are not the cheapest option on the market, but the quality more than justifies the cost. Overall, I highly recommend the Whiteside Router Bits for anyone looking for reliable cutting tools..