2.5 ML Glass Essential Oil Vials – 10 Pack Glass Vials Capacity = 2.5ml, 2.5 grams Wacky’s vials are good for storing your precious CBD, terpenes, pollen, essential oils, hash, kief and other herbal medicines.  The size of these glass vials are 15 x 46 mm and they come with a screw tight cap lid to keep your hash oil safe and fresh!