Drop Tube is available in a 19 or 25mm diameter. Made of PP throughout for ultimate compatibility, it comes with an injected screw-neck nozzle and a cap. Designed with a plastic nozzle, it offers excellent price performance compared to high-end dropper tubes. Drop Tube is very easy to use. Just squeeze the 15ml tube and it will dispense the product in exact 0.055ml* drops. Apply it directly to the local area or onto your fingertip first. Whichever way you use it, each precious drop makes you appreciate the product.