Build your own Hydraulic Cyborg Hand and experience the fun of a cyborg world! The Hydraulic Cyborg Hand simulates the movements of a human hand using hydraulic power for mechanical transmission without electricity. It allows every finger joint to adjust at different angles for a precisely closed fist or open palm. You can use different grip techniques to hold a variety of items, such as bottles, balls or tiny screws, making it an interesting and fun challenge. This fun, wearable device can be used perfectly by either right-handed or left-handed users, due to the innovative, adjustable design. Users can switch the thumb to make it operation-friendly, depending on their preference!