Specification Brand : PROGLASS BulletPoint1 : Customized would be availible BulletPoint2 : Annealed at 800 degree Celsius BulletPoint3 : Made of borosilicate glass 3.3 BulletPoint4 : Made by hand blowing Capacity : 2000 milliliters CareInstructions : Hand Wash Only Color : Clear ExternallyAssignedProductIdentifier1 : 0764256296845 ExternallyAssignedProductIdentifier2 : 764256296845 FinishType : Glass ItemName : PROGLASS Laboratory Flange Head for The Separately Flask (1 Necks) ItemTypeKeyword : science-lab-boiling-flasks Manufacturer : PROGLASS Material : Glass NumberOfItems : 1 PartNumber : 1269-1000-00 ProductDescription : Laboratory Flange Cap for the Separately flask Description: Flange cap,Joint could be customized accord to the customer's request,Diameter for the flange is 150mm.theF joint has been grinded. the joint of the neck could be customized for any size as your request. Be Made From G3.3 Borosilicate Glass Annealing Point ------560℃ Linear Coefficient of Expansion------ 32×10-7/℃ Softening Point------820℃ ProductSiteLaunchDate : 2017-09-02T14:00:00.000Z RecommendedUsesForProduct : Cooking Size : 1 necks UnitCount : 1