propeller material:bronze,copper,stainless steel,cast steel size:50mm,60mm,1000mm,1200mm,1500mm Reduce ratio:2:1,3:1,4:1 propellerwe can produce as per customer's requirementmaterial:bronze,copper,stainless steel,cast steelsize:50mm,60mm,1000mm,1200mm,1500mmReduce ratio:2:1,3:1,4:1 brone propeller