Our : Committed to excellence. Inspect goods upon arrival. Damages? for prompt after-sales . Versatile Set: Includes 5 sturdy glass stem tubes, ideal for chemistry experiments, drying, or steam distillation. Durable Construction: Made of high-quality borosilicate glass for heat resistance and durability. Accurate dimensions: Each tube is 110 mm (4.33 in.) long and is designed with straight or curved lines. Easy to Use: Smooth interior surface allows for efficient /steam flow and easy cleaning. Multi-Purpose: Suitable for various applications in laboratories, schools, or DIY projects.