Disclaimer: tatting mock beads with size 80 thread, instead of using real beads is just an insane personal choice... You're warned. Moreover, handmade tatted beads could differ in size due to tatter's mood and irritability, but could also differ in shade due to hand washing soap unavailability. Ugh!
Thread dmc size 80, worked with 3 shuttles. Split rings, 3rd thread is carried inside the second half of each split ring.