Dropper replacement caps: Provides sufficient quantity for various uses. Compatible with pipette droppers. Dropper caps: Made of silicone, these caps are compact and lightweight, easy to store and use. Pipette dropper rubber bulb: These dropper caps allow for easy liquid transfer from one container to another. Dropper rubber bulb: Suitable for glass droppers, graduated tubes, and pipettes. Ideal for laboratory and educational use. Pipette caps: Crafted from silicone material, providing a comfortable touch and reliable performance. Size: 3.70 x 1.20 x 1.20 cm / 1.45 x 0.47 x 0.47 inch Color: Red Material: Silicone Package Contents: 100 x Dropper Rubber Caps Note: The package includes only the items listed above. Other products are not included. Note: Due to light reflection and differences in display screens, the color in the image may vary slightly from the actual product. Measurement error allowed is +/- 1-3 cm.