This is great for a spare or emergency. It is splined for a Yamaha V6 outboard. It has never been run, just installed for fitment. I sold the boat I kept this as a spare for so I no longer have use for it. It's light and great to keep in that storage hatch in the boat in case you spin your hub or mess up your prop. Also good for a test prop. It's a 13.7" x 18p 4-blade and made from a heavy-duty composite material. Email, PM, or call 904-two-two-six-2621.