This is a very nice turnbuckle set. The set comes with everything you need including the tiny M2 lock nuts.
The Titanium turnbuckle shaft has a marking on one side, like the Tamiya ones, that helps you finding the right direction to change the length. The adjuster have a 4.8mm marking but the plastic seems a little bit too soft.
The ball connectors have only a little hex socket that makes it a little bit hard to screw in.
Overall a good set to invest in an a big improvement to the original kit turnbuckles.