The Tornado Glass drop-down attachment serves as a buffer between the joint and nail. Keeping excessive heat away from this delicate area. Heat stress is caused from overuse and can be accelerated when a wayward torch isn’t as focused on the nail as it should be. In the long run the drop-down will also save you some money by preventing you from having to replace your pieces on a regular basis. If you’re a daily dabber or smoker, it’s a good investment, & a must have!