1. Practical double branch structure perfectly fits various laboratory experimental connection needs, convenient for daily experimental collocation and . 2. Standard ground mouth design, perfectly compatible with most mainstream laboratory glassware, easy and fast to assemble and disassemble. 3. Spherical round bottom design ensures uniform heat conduction, maintaining stable working state during heating and reaction processes. 4. Made of thickened glass with exquisite workmanship, great high temperature for laboratory use. 5. Widely applied for reaction, distillation, reflux and other scientific experiments, ideal for laboratory and teaching school use.