DescriptionIf 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.