Snap On 3/8 18v Impact Gun Please Read, used but in good working order the gun it's self was reconditioned around 4 years ago still works just as well, one battery is faulty sometimes it'll work fine and other it won't, the other battery is perfect and the gun works better than ever with this on, it is a non genuine battery but that doesn't affect anything it still charges on the snap in charger. I have videos of it working with both batteries just to prove there's nothing wrong with the gun.