Perfume Studio® 5ml Roll on Bottles for Essential Oils with Stainless Steel Metal Balls (12, Cobalt with Metal Ball)
NOTE: Only use these Metal Ball Rollers with pure uncut oils. Do Not use Metal Ball Rollers with diluted or carrier oils, particularly fractionated coconut oils. This is a high lubricant oil that will force your metal ball to pop out. For these type of oils you should use plastic ball roller bottles.