Vacuum straight inlet adapter with inner glass joint at bottom , a verdical hose connection at top and a fritted disc between the joint and hose connection; The standard taper lower joint can provide a leak free way to any lab glassware parts with standard taper female joint, interchanable, durable and reusable; The glass hose connector has an O. D. of 10mm at the largest serration ideal for vent or introducing glass or vacuum during a vacuum distillation, fractionation etc in organic chemistry, accepts 3/8” ID flexible rubber or PTFE tubing. Laboy Glass inlet adapter is made of high-quality borosilicate glass and annealed at 800 degree Celsius , can be heated directly in an open flame and can withstand typical laboratory thermal variations in chemistry processes like heating and cooling. All the jointed glassware products in Laboy are made by hand-blowing, heavy wall design, for the interchangeable joints, they are finely grounded both by machined and hand to ensure leak free. All the glass joints has a standard 1: 10 taper, it can fit any glassware with joint which has the same taper and same outside diameter as long as the apparatus to which they are attached does not interfere. For example, an adapter with 14/20 male joint will fit into a 14/35 flask.