Specification AgeRangeDescription : Any Age Group Brand : EISCO BulletPoint1 : Cast Iron bottle with cap BulletPoint2 : Length (with cap): Approx. 3.63in BulletPoint3 : Outer Diameter: 1 in BulletPoint4 : Inner Diameter: 0.63 in BulletPoint5 : For demonstration of water expanding as it freezes CareInstructions : Hand Wash Only ItemName : Bursting Bottles (Pack of 8), Cast Iron with Cap, 3.63" Long, 1" Outer Diameter, 0.63" Inner Diameter - Eisco Labs ItemPackageDimensions_Height : 1.5 inches ItemPackageDimensions_Length : 7.5 inches ItemPackageDimensions_Width : 5 inches ItemShape : Round ItemTypeKeyword : science-lab-dispensing-bottles Manufacturer : Eisco Material : Cast Iron NumberOfItems : 8 PartNumber : PH0119EPK8 ProductDescription : These cast iron bursting bottles with caps are ideal for demonstrating how water expands as it freezes. The bursting bottle provides a visually and kinesthetically effective method for understanding an abstract concept. ProductSiteLaunchDate : 2017-08-21T07:00:00.000Z Reusability : Reusable UnitCount : 8 UnspscCode : 24122000