APPLICATION: For use on propane-powered floor waxing, burnishing, and polishing machines that use propane. BUILT-IN GAUGE: Comes with convenient installed propane level gauge, so you can always tell how much propane you have. HIGH QUALITY and LONG LASTING: Powder coated for long-lasting exterior protection, high-grade steel welded construction NEWLY DESIGNED all-in-one multi-valve for filling and for connecting to the buffer machine SAFETY & COMPLIANCE: Manufactured to Department of Transportation (DOT) and Transport Canada (TC) specifications.