TOPWEL 10ml Refillable Amber Glass Roller Bottles with Metal Roller Balls and Black Plastic Lids (15) Capacity: 10 milliliters Size: 16mm x 93 mm (0.63 x 3.66 in.) These terrific little jars that are perfect for essential oil samples or for blending small amounts of oils Perfect for storing perfume oils or other liquids Perfect for applying diluted essential oils and blends directly to the skin.