TOPWEL 10ml(1/3oz) Refillable Clear PET Plastic Essential Oil Bottle with Orifice Reducer and Mushroom Cap (10, Black cap) Capacity: 10ML(1/3oz) Main Material: PET Plastic Size: 60 mm x 21 mm (2.36 x 0.82 in.) These terrific little jars that are perfect for essential oil samples or for blending small amounts of oils