Turning Point Propellers 21501740 PROP HUSTLER 4BL AL 14.5X17 LH Aluminum prop is squeeze cast for added strength and stainless steel-level performance at a more approachable price point Higher rake angles tighten the vortex produced by the propellers, adding to boat lift and overall performance Improves handling and boat lift through aggressive rake and cupping Tuned progressive pitch angles accelerate and channel water to minimize slip and increase performance and fuel economy Improves top speed, handling, hole shot, mid-range performance, and fuel economy