The Master TURBO kit is a top-of-the-line kit for heat welding, the company says. These tools are user friendly and they can be used by a pro as well as an apprentice. When using these TURBO tools, TURBO guarantees that your productivity will increase by at least 50% if not, TURBO commits to refund the full purchase price. TURBO has so much confidence in their tools that they even brag about their lifetime warranty plus a 30 day money back guarantee.