This anti-climb adapter is with 24/40 top and 24/40 bottom joint, capacity of 250ml. The upper inner vapor tube sealed to the top of the trap prevents the film or form migrating directly into the condenser. Laboy Glass anti-climb 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 machine 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.