Our jiggler siphon pump are made of high quality aluminum or brass copper. We manufacture both the ½ inches (12mm) and the ¾ inches (19mm) model in high quality red brass copper or pure aluminum. Hoses are supplied from the highest quality food grade, to the most economical available. We are a specialist manufacturer of jiggler siphon pumps with our manufacturing line based in the guangdong region of china.