I rely on this inexpensive bit set in several sizes for use in my LMS 3900 Hi Torque Mini Router. The built-in knife blanks made of tool steel are understandably not sharpened. Out of curiosity I have a small cutter of the box not sharpened on a piece of aluminum with an amazing finish and cutting power.I don't normally try to do anything but curiosity and the price made me do it - LOL.. true and the choice becomes a wide spectrum of product processing cover.Price is right - product is great for overall function.Finishing is controlled by how the tool is sharpened,feed,speed,material type and lubrication or not.In my opinion you can't really go wrong here.