dropper glass bottle 20ml,essential oil glass bottle 20ml with dropper 18/415 dropper glass bottle 20ml,essential oil glass bottle 30ml with dropper ... quality rubber nipthe bottle capacity can be 5ml,10ml,15ml,20ml,30ml,50ml,100ml,200mlthe bottle neck size is 18/415 ... be Amber, blue ,green,the below green glass bottle is 20ml,30ml,50ml ,the plastic dropper is 18/415 dropper glass ...