I just pulled these off my 9.9 Nissan since I'm only using it as a kicker now. They were used for the past 2 seasons - no damage, just a few scratches and scrapes. They made a big difference when I was pushing my Basstracker with only the 9.9. Helps your boat get up on plane quicker, and helps save on gas since you don't have to run it as hard as you would without them. Make your holes, bolt 'em up and go! -Length from front tip to back edge is 10 inches. -Includes all hardware, (stainless bolts, washer and lock-nuts) $15.00 - will even include free shipping within Ohio!