Alice Aluminum propellers for Mercury outboard engines. ↵ Durable: made of aerospace Aluminum-Titanium alloy ↵ Balanced: 3D laser scanning for static and dynamic control ↵ Anti-corrosion: robotical AkzoNobel powder coating ↵ Performing: high efficiency and reduced consumption thanks to blades perfect cupping ↵The mounting kit must be ordered separately if necessary to replace nuts, washers and spacers.↵↵ For Mercury outboard engines:↵25/30(4-stroke) [2006>]