eye cream roll on bottle with steel ball are used to fill oil or perfume. PP cap or Alu. cap is available 1 ... packaging to fill medical oil, eye-cream, perfume ect. 3. Capacity: 2ml, 3ml, 4ml, 5ml, 6ml, 7ml, 8ml, 10ml, 15ml, 16ml, 20ml ... , 30ml, 35ml; 4. Material: Cap: PP or Alu. Bottle: PP/PETG Ball ...