Lasco 17-5351 Propane Prest-o-Lite Plug, Brass. Standard Prest-o-Lite Fitting propane gas fitting. Brass POL plug. Use to connect tanks to smokers, torches, cookers and other appliances. Use to connect regulators to tanks and hoses. Lasco is a 3rd generation, family owned and operated, plumbing supply service company in business for over 80 years. Larsen Supply has the largest retail plumbing line in the industry today with over 7000 packaged and 16,000 bulk SKU’s. We pride ourselves on Service, Selection and Support! All Lasco merchandise if warranted to be free of manufacturing defects. Please revert to retail place of purchase for resolution of any possible plumbing questions, warranty or defective part replacement.