CNC Aluminum 6717451 4 Blade Magnalium 7075 propeller Machine-cut to high tolerances, this prop is ready to use right out of the box. The Magnalium 7075 alloy makes this material upwards of 30% stronger than standard 7075 aluminum. Left-hand rotation. These spin counterclockwise when viewed from the back of the boat. -Fits 1/4"(.250" 6.35mm) Smooth Bore Propeller Shafts.-Hard oxygen-anodized coating for added strength.
