MiniBle S is an ultra-high-end specification microbubble aerator. From inner to the outer, all components of MiniBle S are made from SUS316 medical grade stainless steel. Medical grade stainless steel is an ultra-oxidation-resistant material, which is considered as the highest level of material in the industry. MiniBle S is manufactured by CNC precision processing technology, with extreme craftsmanship and precise design, in addition with concealed solid parts, thus, it has the reputation of “most durable” microbubble aerator.