Specification Brand : LABOY BulletPoint1 : The flow control adapter is with 2mm PTFE stopcock, vertical 8mm hose connection, 19/22 Standard taper inner joint. BulletPoint2 : The 2mm PTFE stopcock provides on/off control with the main valve to regulate the flow into reaction system BulletPoint3 : Allows for flexible tubing to be connected to apparatus for introduction of vacuum or pressure in vacuum distillation BulletPoint4 : The glass adapter is made of borosilicate glass 3. 3, high quality, heavy wall, durable and reusable BulletPoint5 : made by hand blowing Color : 19/22 IncludedComponents : inc ItemName : Laboy Glass Vacuum Flow-Control Adapter with PTFE Stopcock,19/22 Inner Joint & Straight Hose Connection ItemPackageDimensions_Height : 2 inches ItemPackageDimensions_Length : 2 inches ItemPackageDimensions_Width : 2 inches ItemPackageQuantity : 1 ItemTypeKeyword : lab-distillation-apparatus Manufacturer : Laboy Material : borosilicate glass 3.3 ModelName : Liebewh0zso9rd8tb ModelNumber : HMA012902 NumberOfItems : 1 PartNumber : HMA012902 ProductDescription : Specification: Condition: Brand New Item Type: Four Prong Clamp Material: Zinc Alloy Color: As Pictures Shown Applicable Scene: Experiment