The Unity top was designed by Rich's wife Sue, and she came up with such an elegant and sweet design! If you look at the milling in the body of the top, you'll notice that it is people holding hands, encircling the stem. How cool is that! It has a very unique and interesting grip on the stem that I love, and the dimples around the rotor are awesome. It's a two piece top and meant to be on the lower scale as far as price range goes, so you get a very cool top for a nice price point! There are 15 different metal combinations for the Unity top and it has a 1.24" diameter.