Everything except the teats (for hygiene reasons).
My set include in addition: 21mm and 28mm flanges. And 6 PPSU (yellow) bottles. The 2 bottles that came with the set are PP (white) bottles. PPSU is a more durable and higher quality plastic than PP.
Still available. Yea just buy new teats and flanges for personal hygiene. Its light but bulky. I left it in the office to pump at work and feed directly at home.