Usage Tips:Precise Measurement: Featuring a 20cm length and a 5.5cm rubber cap, these glass pipettes are graduated for easy measurement from 1 to 10 ml. The 2mm tip hole ensures accurate dispensing without drips, ideal for laboratory and crafting use. Material: Constructed from lead-free, - glass, these droppers and safe usage. The high-quality rubber cap enhances suction, making these pipettes a reliable choice for handling various liquids.User-Friendly Design: Each pipette comes with a cleaning brush, making them easy to clean and maintain. The detachable rubber bulbs and clear glass structure allow for thorough cleaning, ensuring they are ready for reuse in any setting.Versatile Applications: Perfect for transferring essential oils, fragrances, medicines, pigments, and more. These droppers are essential for skincare routines, perfume modulation, handmade beauty products, art projects, and scientific experiments.Essential Tool for : Whether you are a scientist, artist, or DIY enthusiast, these glass droppers are indispensable for accurately measuring and dispensing liquids, aiding in precise applications across various projects.Color: Picture ColorMaterial: GlassPackage Contents:4* dropper 2* cleaning brushOnly 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.