perfect for me difficult to figure out the first time [SEP] i like this drill because i feel safe using it it is not as strong as a dremmel or other brand drill but for me i like that i do not feel like i am going to drill a hole in my finger every time i use it at the same time it works well it evens out my nails perfectly and my manicure looks great every time the price is great as well it saves me tons of money from going to the salon it was very confusing to figure out how to use it the first time i thought it was broken for about minutes i even youtubed directions and could not fine much just push the little nail looking thing in it will catch when you try to turn the bit and turn the bit on the top to open it up and switch the bit it is easy to do once you figure it out the first time and always put your fingers on the indents halfway up the drill for stability