This little drill has proven to be very useful! I make earrings out of polymer clay and instead of piercing holes before baking (which would distort the shape) I decided to buy this drill bit to keep the holes clean. Oh my God! What a lifesaver! I only took off one star because two of the bit holders seemed to close so I couldn't find one to hold the super duper little bits. However, the drill I needed worked! So thank you!