ITEM NAME:24/40 Glass Vacuum Take-off Adapter Laboratory Straight Tube Gas Inlet Adap ME 24/40,Glass Straight Vacuum Take-off Adapter,Gas Inlet Adapter,Lab Glassware Material: borosilicate glass 3.3, Joints size: 24/40 -package:1Pcs.24/40,Glass Straight Vacuum Take-off Adapter,Gas Inlet Adapter,Lab Glassware. Material: borosilicate glass 3.3.