Specification Brand : Sscon BulletPoint1 : Package Content:200Pcs Rubber Stoppers.Head Diameter:13mm/0.51''.Fit For:7mm/0.28'' hole.Total Weight:110g/3.88oz. BulletPoint2 : Made of rubber lightweight and durable. BulletPoint3 : It is resistant to high temperature washable reusable and will not out of shape. BulletPoint4 : Great for liquid culture jars hydroponic mushroom bag etc. BulletPoint5 : Please check the size carefully before ordering! Color : White ExternallyAssignedProductIdentifier1 : 0745679989859 ExternallyAssignedProductIdentifier2 : 745679989859 IncludedComponents : rubber stopper ItemName : Sscon 200Pcs 13mm Vial Rubber Stoppers Port Solid Seals for Glass Vial Liquid Culture Jar ItemPackageDimensions_Height : 12.8 centimeters ItemPackageDimensions_Length : 2.8 centimeters ItemPackageDimensions_Width : 8.5 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : science-lab-rubber-stoppers Manufacturer : Sscon Material : rubber ModelNumber : CW19072500CW19 NumberOfBoxes : 1 NumberOfItems : 4 PartNumber : CW19072500CW19 ProductDescription : Product Description 1.Made of rubber lightweight and durable. 2.It is resistant to high temperature washable reusable and will not out of shape. 3.Great for liquid culture jars hydroponic mushroom bag etc. Product Specifications: Material:Rubber. Color:Grey. Dimension: Head Diameter:13mm/0.51''. Fit For:7mm/0.28'' hole. Total Weight:110g/3.88oz. Package Content:200Pcs Rubber Stoppers.