Description These red caps are designed for use with droppers and pipettes, providing a secure and snug fit. The material ensures durability and flexibility, making them ideal for laboratory settings. Features -Color:Red -Material:Silicone -Size:3.50X1.40X1.40cm/1.38X0.55X0.55in (Size External dimension) -Size:3.50X0.60X0.60cm/1.38X0.24X0.24in (Size Inside diameter) -High elasticity: made from high elasticity material, ensuring a tight seal to prevent liquid leakage, ideal for precision laboratory experiments -Chemical resistance: excellent chemical resistance, does not react with most chemicals, extending the lifespan of the dropper, suitable for various chemical experiments -Easy installation: easy to install and remove, improving work efficiency and providing convenience for frequently used droppers -Gentle: reduces discomfort from prolonged use, suitable for long term laboratory operations -Universal design: fits various standard dropper sizes, meeting different laboratory needs and enhancing experimental flexibilityPackage list: 40 x dropper cap