Content: 9 mlIsopropyl Nitrite - CAS 541-42-4Here it is! The only brand ever proclaimed Purest-Best. San Francisco's notorious "Drummer Magazine" called Hardware a "very powerful" product. "Bunkhouse Magazine" proclaimed there is nothing better around, and "San Diego Update", "Florida Alive!" and "This Week In Texas" all said Hardware is the world's most powerful aroma.