Bits are great I have used many and the cut quality is as expected from a bit at this price point. . Unfortunately, I almost ended up in the ER trying to get the first part out of the case. The bit was so tight in the collar that I could barely move it, so I put on a pair of leather gloves, just in case, and kept trying to pull the bit out. My grip slipped and the blade sliced through the glove, leaving a fairly deep cut on my finger. After some first aid (and hiding the bloody paper towels from my wife) I was able to pull the racquet out with pliers, but this left a small chip in one of the cutting blades as the pliers slid up the shaft from the force I had to exert to pull it out. After the first hit, the lesson is learned. To remove the rest of the bits, I disassembled the case and broke the wooden pieces holding the rubber bands, allowing the bits to be safely removed. I threw the suitcase in the trash and made myself a holder. My advice: buy the bits you need separately and save money and potential hospitalization.