The CRAFTHROU Stethoscope Extension Tubes are made of lightweight, durable PVC material. They provide a great solution for replacing lost or damaged stethoscope tubing, ensuring your medical equipment remains functional and reliable. Offering superior portability and sturdiness, these tubes are ideal for doctors and nursing professionals on-the-go, allowing them to maintain clear audio while carrying out their duties. Constructed with precision, these extension tubes offer the same high-quality sound and comfort as their original counterparts, making them a cost-effective and essential addition to any healthcare professional's kit.