Aluminum Boat Props. I know they’re damaged, but did you know they can be rebuilt? All you need to do is get these damaged props take them to a/your boat shop, get the props rebuilt and now you have a spare prop for a lot cheaper than buying a new one. I always carried one with me while I was at the lake. You never knew when you would hit something submerged or even when trying to pull up to the shore. So many Texas lakes have submerged obstacles and rocky banks that can damage your boat and prop. Yep, a lot easier to have a cheap spare prop with you if you damage the one on the boat. A quick change and you’re back on the lake, not having to pull the boat in canceling your water time. One prop is 13 3/4 x 15 and the other one is 13 3/4 x 17