Specifications: Made of corrosion-resistant glass, it can ensure the liquid be safely and perfectly protected from damaging UV rays and risk of rapid evaporation. It is suitable for storing liquids that are volatile or prone to reactions when exposed to light. The silicone suck tip and transparent glass dropper are designed to facilitate liquid absorption and not easy to leak. Item Name: Dropper Bottle Material: Glass Features: Light-proof, Glass Container, Multiple Specifications Diameter of Bottle Mouth: 18mm/0.71" (Approx.) Size Chart: 5ml: Bottle Height: 73mm/2.87", Product Size: 7.3cm x 2.2cm x 2.2cm/2.89" x 0.87" x 0.87" (Approx.) 10ml: Bottle Height: 80mm/3.15", Product Size: 8cm x 2.5cm x 2.5cm/3.15" x 0.98" x 0.98" (Approx.) 20ml: Bottle Height: 94mm/3.70", Product Size: 9.4cm x 2.9cm x 2.9cm/3.70" x 1.14" x 1.14" (Approx.) 30ml: Bottle Height: 100mm/3.94", Product Size: 10cm x 3.3cm x 3.3cm/3.94" x 1.30" x 1.30" (Approx.) 50ml: Bottle Height: 114mm/4.49", Product Size: 12cm x 3.9cm x 3.9cm/4.72" x 1.54" x 1.54" (Approx.) 100ml: Bottle Height: 134mm/5.28", Product Size: 14cm x 4.5cm x 4.5cm/5.51" x 1.77" x 1.77" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Dropper Bottle