This is a very rare type of machine. It's a machine that scratches the entire surface of a CD to make it unplayable when disposing of it. It makes many indentations on the recording surface in about 3-4 seconds per CD. There are no indentations on the printed surface of the CD, only on the recording surface. I have never been able to play a CD after scratching it with this machine. It's convenient when you want to securely dispose of CDs. Recent CD shredders can also cut CDs, but they are expensive, so I used this machine. Operation has been confirmed, but it is old, so please check the photos before purchasing. Comes with a dedicated box and instruction manual. I will carefully pack it with cushioning material and waterproof measures before shipping.