Venhill U01-4-125-BK Universal Split Dual Throttle Motorcycle Cable Kit with Junction

What is actual lengths and diameters of the wires? Not clear in the description as it seems the wire is larger diameter than the conduit?

Will this work on a 66cc 2 stroke motorized bicycle that I'm adding 2 carbs on a v split dual intake set up.

Where can i find instructions for building the split?

So i completely botched one of the cables, just one after the split. Do they sell spares?