Features: Ensure precisely liquid handling with our 10Pcs Dropper Rubber Caps, for enhancing the accuracy and reliability of your laboratory result. Crafted from rubber, these dropper suction caps is soft, flexible and slip resistant for easy operating, fit on various measuring tubes, test tube, glass droppers, liquid droppers, eyedroppers, and pipettes. Very suitable for laboratory technicians, researcher, and professional, these dropper rubber bulb caps is essential tool for laboratory experiment. Widely used for transferring liquid, oil, sample processing in research labs, routine test in hospital and clinics, and educational demonstration in university lab courses. Light in weight and portable, ensuring hygienic laboratory environment while facilitating seamlessly transitions between different lab setting. Specifications: Color: Blue Component: Rubber Size: Approx. 34.5x55.5mm/1.35x2.18in Weight: Approx. 120g Package Includes: 10Pieces Dropper Rubber Caps note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color