Our 13 thread wooden essential oil roller caps are natural roll-on lids specially designed for aromatherapy essential oil glass bottles. The outer cover is made of natural wood, presenting unique grain and comfortable hand feel, eco-friendly and elegant. Equipped with polished stainless steel roller ball, it rolls smoothly on skin and evenly applies essential oil, massage oil and skincare liquid without scratching. Precision 13 thread processing, perfectly matching the mouth of 13-thread essential oil glass bottles. Good sealing performance after tightening, effectively reduce essential oil volatilization. Laser engraving custom logo is available on wood surface for brand personalized packaging. Multiple wood materials optional, such as bamboo, beech and walnut. Ideal matching lid for aromatherapy essential oil roll-on bottles, skincare massage oil bottles and cosmetic sample bottles. Factory direct wholesale, flexible MOQ and stable production capacity for cosmetic brands and packaging distributors.