1. Heat Adapter: This adapter allows users to adjust the temperature of massage therapy machines and provide a soothing heat massage.

2. Vibration Adapter: This adapter adds vibrational capabilities to massage therapy machines, providing a deeper and more comprehensive massage experience.

3. Waterproof Adapter: This adapter enables water-based massage therapy machines to be used without worrying about water damage or leakage.

4. Adjustable Pressure Adapter: This adapter allows users to adjust the pressure of massage therapy machines to their exact preference.