Heat shrinker for PVC heat shrink capsules. Ideal for large volume applications, or anywhere that you want a fast, consistent, and professional look. If you have trouble using a heat gun or boiling water neck plunge you will love this machine. Plug it in (110 Volt), let it heat up for a few minutes, and you are ready to go. Slide a bottle in for just a few seconds, gently spinning the bottle for an even heat, then slide it down the tray out of the heating basket. Takes only a few seconds per bottle. Made my life easier. Definitely the way to go.