The Sundia Monobolo, a one sided diabolo, is designed for the diaboloist who really wants a new spin. This is the same Diabolo as the Sundia Fly, wide axle triple bearing and all, but instead of a second cup, it has a counterweight. This allows it to spin like a top. There is no limit to the possibilities.
All of Yoyosam's diabolos come with sticks, string, and instructions.