Product Includes: You receive 4 pieces glass droppers and 4 pieces of bottles, sufficient quantity to meet your needs. Product Size: The size of dropper measures about 77x7mm/3.03x0.28in, the bottle is about 110x17mm/4.33x0.67in, suitable size to carry and store. Premium Material: The dropper squeeze cap is made of premium rubber. The dropper is made of thick glass, which is highly transparent and dishwasher safe. You can use with confidence. Adjust Before Use: After taking out the dropper, you need to pull out the rubber squeeze tip on the glass dropper to the appropriate position, so that you can squeeze the rubber tip to absorb the solution. Easy to use. Wide Applications: Perfect for measuring and transferring a variety of liquids, such as scientific experiments, arts and crafts, skin care, essential oils, painting, , children's feeding medicine, pet feeding and more. Note: Due to the difference between different monitors, there may be a slight color difference existed. Colour:Transparent, Black Material:Glass Package Contents: 4 x glass droppers 4 x bottles Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.