Product Details:

Material: Rubber 

Application：Our products are great for various kinds of laboratory utensils, such as flask, test tube or other laboratory applications, especially for use with non-aggressive or concentrated solutions.

High Quality These stoppers are made of solids natural rubber without hole. Tapered shape design, easy to plug and pull, for a long time use.

Sizes: 000# -20#, meeting your different needs.

Using :Can be useds to block glass ports, pipe mouths, fish tank openings, etc.

note:

1. Due to manual measurement, please allow an error of 1-3mm.

2. Since different computers display different colors, thank you for your understanding, the actual product color may be slightly different from the image.