The Optimum Baits Double Diamond Swimbait is available in two sizes, 3 inch and 5 inch. Known as a pioneer and innovator of swimbaits, Optimum designed the Double D with performance in mind. This bait will track in a tight, zig-zag pattern on retrieve. Its entire body rolls and quivers erratically as the monsterous tail-kick displaces water. The Double Diamond works great for all types of game fish in both fresh and saltwater!