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This is a Foba 20cm Combitube Extension. Its non-rotating bolts ensure a rock-solid fit, with no variance between the extension and your original Combitube. The starting point of the Foba Combitube system is the tube itself. The Combitubes are made of aluminum and have a non-reflective matt black surface. The unique cone connectors allow you to connect an unlimited number of Combitubes.
In the Box
Foba Combitube Extension with Non-Rotating Bolts - 20cm