First a word of warning: these bandages have sold more than any other product in my shop. The body allows limited movement to rotate the bits up to extract the bits and the bits are firmly seated. Because these are up-spiral drills, there's nothing to catch apart from the sharp edges. On the other hand, they cut cleanly, both meat and wood. birch plywood material. The first piece is cut off about 1/2 inch from the top. A few minutes later, the second burst in the collet. I ended up using 1/2 inch in one go and then chopped away the rest of the wood. This is Freud. Who could expect quality like Harbor Freight?