Each Solas boat prop is balanced and precision made with superior materials for a stronger and thinner blade that is smooth, fast, efficient and tough. Every Solas aluminum prop is squeeze-cast and coated with 4 paint layers. Each stainless steel prop is made with the industry's highest percentage of chromium, nickel and molybdenum, resulting in a boat prop that is more rigid, highly rust resistant and less brittle. Boat prop has either a pressed-rubber bushing or a shear pin hub to match the motor.