Nylon filament spool

The product at issue is identified as a Nylon Filament Spool cartridge for a 3D printer. 

The spool cartridge is approximately 8 inches in diameter and 2 inches in width, and contains a quantity of nylon monofilament. 

The diameter of the nylon monofilament is greater than 1 millimeter. 

The spool cartridge is designed to be placed in a 3D printer.

The nylon monofilament to print three dimensional objects by liquefying the filament and extruding it onto a glass bed within the printer. 

Although the 3D printer is described as a printer, it does not print as that term is commonly or commercially understood. Therefore, this type of machine is not classified within heading 8443, and classification of the
Nylon Filament Spool cartridge as a part of a printer within subheading 8443.99 would be incorrect.

Subheading HS: 3916.90. 

Source: https://rulings.cbp.gov/index.asp,  July 23, 2015 (N266336).