You will get: 50 × Clear Glass Bottle with Dropper, 50 × Gold Cap, 2 × 2ml plastic dropper.
Firstly, put the white latex head into the golden cover ring.
Pull out the white latex a little bit harder, and the gap of the white latex is just stuck on the gold cover ring. When the first layer of the white rubber head is on the top of the gold cover ring, it means that they have been fixed.
Check if the transparent dropper has holes on both sides, insert the big edge of the dropper into the gap of the white latex.
Finally, rotate the assembled gold cap ring part with the mouth of the small glass bottle together, and they are assembled!