Perfume Studio&reg; 1oz Cobalt Glass Dropper Bottles for Essential Oils - Pack of 6 Dropper Bottles with Calibrated Glass Pipette (1 Oz, Cobalt) Perfume Studio 1oz Cobalt Glass Dropper Bottles for Essential Oils with Bonus 2ml Perfume Sample Pack of 6 Dropper Bottles with Calibrated Glass Pipette NOTE: Perfume Studio is the only authorized reseller of this item. Other sellers may sell an inferior different product. Make sure you buy from Perfume Studio.