Volvo Penta Duoprop Type T - T8 (Set) - 3861110 - 100% authentic Volvo Penta Duoprop Type T nickel-aluminium-bronze (Nibral) propellers for IPS drives. The nickel-aluminum-bronze propeller is developed to add to the revolutionary IPS propulsion system"s outstanding performance. The design combined with a material that withstands corrosion, as well as minimizing growth, ensure optimum performance and outstanding control. Performance is outstanding and the special nickel-aluminium-bronze (Nibral) alloy complete with full electric isolation ensures no growth and excellent corrosion resistance. These Volvo Type T duo props are backed by Volvo Penta"s extensive warranty. Be sure to try out our Propeller Guide to find the right Volvo Duo Prop for your engine.