I originally ordered the wrong prop. Ordered 1 for a 1977 50 HP Mercury then found out it was a 1974. Received order on time and got what I ordered. Contacted them and they allowed me to return and reorder. Very pleasant and helpful. Was only out the shipping. Received the correct prop within a few days and installed it. On the second trip out....two hours running time I spun the prop. Did not abuse it or hit anything, the hub seems defective. I put the old prop back on and will call them tomorrow. Freat service, seems like a fluke on the propspin. Will see what they say.