There are no Monobolos available by Sundia.
No worries. I love playing both products. Sundia ones are nice and easy once you get over all the work and difficulty of speeding it up. When you can get speed for sundia it's easy to handle because of bearings and you being able to grab it from the small nub.Monobolo however works straight away just give little spin with your hand and speed up like normal diabolo. And when you want to make it turn around just switch axles. I do believe there's a place for everything. And both products are well done. Also I love the fact that even If you get tired playing with monobolo you can get two sets of hubs to your Henry's Circus diabolo (or Finesse if you ask for this certain pair of adjustment pieces from JC). So basically what I mean is. If you buy monobolo you can later disassemble it and use it to have two new kits, lighter kid and widerlighter kit. I do belive the sundia model has a hubstack like mechinism in the cup correct? if so I could be possable to make hubstacks for a sundia fly diabolo! by buying 2 sundia "monobolos"(dunno what else to call them sorry) and dissassemble them!