Plastic Shank Reinforcements from China
Narrow plastic strips inserted lengthwise in shoe arches for stability. These TPU or nylon plastic shanks classify under 6406.90.30 as essential footwear parts of plastics.
Duty Rate — China → United States
17.8%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include engineering specs showing flex modulus for arch support validation
• Ship disassembled from other parts to maintain 'parts' status
• Watch for steel shanks reclassifying to metal subheadings