Looking to bring movement and real-world engineering to your LEGO® Technic builds? The Hose, Pneumatic 4mm D. 21L / 16.8cm is a flexible black tube designed for intricate connections and functioning mechanisms. Measuring approximately 16.8 centimeters in length with a 4mm diameter, this part is ideal for routing air and creating realistic pneumatic systems in your models.
This sleek black hose is commonly used to simulate hoses, pipes, or other functional connections in advanced LEGO® Technic creations. Perfect for adding authentic detail to vehicles, machinery, or robotics, it allows builders to experiment with pneumatic features and bring motion to their projects. Whether you are customizing a set or building from scratch, this versatile piece makes complex functions possible.
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