Made of stable material, high temperature sterilization resistant. Comes with black rubber ball, leak-proof screw cap, fits 50ml essential oil bottles, perfect for travel and skin care. Round dropper bottom design, easy to use and won't waste any liquid. Features -Color:Black -Material:Glass, Plastic, Silicone -Size(Tube):8.90X0.90X0.90cm/3.50X0.35X0.35in -Size(Lid):2.30X2.20X1.60cm/0.90X0.86X0.63in -Size(Silicone Head):2.30X1.70X1.70cm/0.90X0.67X0.67in -Size(Entirety):10.60X2.30X2.30cm/4.17X0.90X0.90in -Made of stable material, heat-resistant and self- to ensure and safety. -Moderate capacity for 50ml oil bottle only, perfect for travel and skin care. -Removable structure, easy and convenient to clean and wash, reusable, effective cost saving. -Round dropper bottom design, easy to use, accurate dispensing of liquid, no more spills. -Black rubber ball is leak-proof and screw cap is tightly closed to avoid product waste. Ensure the quality and activity of the product, which can be used for a longer time. Package list: 12 x Droppers