1)boat marine propeller with 2 leaves 2)material:Cu1,Cu2,Cu3,Cu4,Ni-Al Bronze,Stainless ... Steel 3)Used for boat, yacht or ship. boat marine ... propeller with 2 leaves1,Material: Cu1,Cu2,Cu3,Cu4,Ni-Al Bronze ... also an important factor6. Packing: Wooden Pallet packing. boat marine propeller with 2 leaves