Features: Ensure precisely liquid handling and measuring with our 50Pcs Dropper Rubber Suction Cup Caps, for enhancing the accuracy and reliability of your laboratory result. Crafted from rubber, these dropper Pipettes suction caps is soft, flexible and slip resistant for easy operating, fit on various measuring tubes, test tube, glass droppers, liquid droppers, eyedroppers, and glass 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 transferring between different lab setting. Specifications: Color: Redness Component: Rubber Diameter of Opening: Approx. 7mm/0.27in Dropper Caps Size: Approx. 35x15mm/1.37x0.59in Weight: Approx. 75g Package Includes: 50Pieces Dropper Suction Cup 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