PWD Iron Horse 10ml Isobutyl Nitrite Solvent Cleaner from Poppers Los Angeles PWD is the hard and fast cleaner that you'll want to use over and over again because of it's strength and rock solid reputation. Picture yourself riding your horse through the forest in a frenzy to find your partner who is behind you. He catches up to you and you have a tete-a-tete together before going off and cleaning at full speed. It's a clean feeling you want to experience again and again. The two of you will clean for hours until you both take off your leather saddles for a outstanding finish. Iron Horse 10ml is available in 10ml and 30 ml sizes. PWD Iron Horse 10ml Isobutyl Nitrite Solvent Cleaner from Poppers Los Angeles.