100% SATISFACTION SERVICES: We are providing you the best quality droppers, There is no glue for connecting silicone and plastic. No smell, safe and reliable. If you have any questions about our those colorful pipettes dropper, we will do our best to meet your satisfaction.NOTE: These silicone pipettes withstand range temperature tolerance from -40F to 248F hot,please pay attention to liquid temperature when using,if you use it to make chocolate,you need to know as chocolate cools it thickens and at times it may be difficult to release through the pipette opening.EASY TO CLEAN: The package come with a pipette brush, and just gently pull and detach the plastic pipette to easily remove the silicone dropper. It is non-sticky and easy to clean with the brush. It can also be used in dishwashers, freezers and microwave ovens.The measurements are etched in plastic and will never be washed offWIDE USAGE: These liquid dropper is mainly use for candies gummy making, food decoration, kitchen, art, essential oils, pet straw, hand-eye coordination, painting, craft, accurate calculation Calories, and more. Good choice for creative activities and fun science experimentsVALUE SET: You will get 20pcs plastic eye droppers, each dropper has clear scale in the bottle body and the scale lines as follows:1 ml, 2 ml, 3 ml, 4 ml, 5 ml, clear scale allows you to control the amount of the medicine easily for pets