APPLICATION: Pipe thread increaserGo from a smaller size thread to larger size threadSIDE A: 1/8" MALE NPTSIDE B: 1/4" FEMALE NPTNOTE: Works with liquid or vapor propane, vapor natural gas and air up to 1000psi Feel free to ask us about conversion kits for almost anything including trucks, cars, generators, tractors, boats, motorcycles, RVs etc. We can build a kit to convert almost any engine! WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the state of California to cause cancer. www.P65Warnings.ca.gov. WARNING: These products contain a chemical known to the state of California to cause cancer and birth defects or reproductive harm. www.P65Warnings.ca.gov.