Although I've only had this tool for a short time, my faith leads me to believe it will be a good purchase! knowing that it comes with two required batteries. You might be tempted to interrupt him with your horn! Why, because after you try to use it or at least "turn it on" it WILL NOT! On to the punchline of this joke. Plastic! Hopefully you'll need a small screwdriver to pry open these two items along with their plastic casings. Then you will do a good job putting them back in their place and you will be Uncle Bob!