Description If you are looking for a practical sealing plug for use, this product will be a good choice for you. This is a sealing plug, which is made of high-class rubber material for practical and long-term use. Simple in structure, very easy and convenient to use. Features -Color: White -Material: Rubber - The plug is made of premium material rubber, good sealing, which has a long service life. - Simple in structure, very easy to use. The sealing plug can greatly meet your scientific research use. - Great for most kinds of scientific laboratory utensils, such as test tube, flask, or other laboratory applications. - Suitable for scientific research laboratory use, especially for use with non-aggressive or concentrated solutions. - Can be used for sealing glass mouth, pipe mouth, fish tank mouth, etc. The plug is made of premium material rubber, good sealing, which has a long service life. Simple in structure, very easy to use. The sealing plug can greatly meet your scientific research use. Great for most kinds of scientific laboratory utensils, such as test tube, flask, or other laboratory applications. Suitable for scientific research laboratory use, especially for use with non-aggressive or concentrated solutions. Can be used for sealing glass mouth, pipe mouth, fish tank mouth, etc.