Four blade high efficiency impeller AAA: Advanced technology, Assurable quality, Authentic reputation (impeller, stirrer, rabbler, beater, propeller, mixing blade, paddle, mixing arm)The axial ... , suspending and oxygen dissolving of biology ferment. Dimensions of Four-Blade PropellersDJdd2hB1B2h1d1d0δ(kg) WeightKSXZSX200254040804010M6-32.4041.842220304540884410M6-33.7762.7842503555601005010M8-45 ...