Size Reference: 15 pack 50ml glass vials with aluminum screw top, and the bottle body measures 5cm/1.97inch in height, 4.7cm/1.85in in diameterr, 3.92cm/1.54'' in mouth diameter. High Quality: The bottle material is high grade glass, sturdy and durable, safe to use; also quipped with aluminum cap, beautiful and not easy to rust. Leakproof & Portable: Small and lightweight, with screw aluminum cap, leakproof, you can take it in purse and for trip. Multi Purpose: Suitable for perfume, ink, lotion, powder, essential oils, seed saving, paillette, sample vials, wedding favors, wedding decorations, christmas gifts, drift bottles, wishing bottles. Clear Bottle: Clear glass for clear seeing the items in it. Great for jewelry making, altered art, miniature art, etc.