4009.21.00.00 - Without fittings

This HTS category, 4009.21.00.00, specifically classifies tubes, pipes, and hoses made from vulcanized rubber that are reinforced or otherwise combined *only* with metal and are *without* any fittings. This means the rubber hose itself has metal components integrated within its structure for reinforcement or support, but it does not possess any attached joints, elbows, flanges, or other connecting pieces.

The key distinguishing feature of this category from its sibling, 4009.22.00, lies in the presence or absence of fittings. While both cover metal-reinforced rubber hoses, 4009.21.00.00 pertains solely to the hose in its basic, unfitted state. The sibling category, 4009.22.00, would cover identical hoses that have undergone further processing to include attached fittings, which are essential for connecting them to other systems or hoses.

As this is a leaf node, there are no further subcategories to introduce. The classification is determined by the material (vulcanized rubber), the reinforcement method (combined only with metal), and the condition (without fittings). Therefore, importers and exporters should carefully assess whether the rubber hose in question has any attached connecting elements to ensure correct classification.