Replaced a omc 3 blade 17p aluminum prop and wow what a difference!!! All things equal picked up 4 mph top end and way better plane!! More stable in turns better bite all around. No need to trim up all the way to get rpm or mph anymore. 1993 18 ft four winns 180 freedom with evinrude 115. Would deffinetly recomend !!!! No need to spend big bucks on stainless for better performance!!