exceeding 1 mm, the foregoing without consistent diameter (provided for in subheading 5404.19.80) Free No change No change On or before 12/31/2020 . 1179. 80D nylon Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.12.96 Monofilament of nylon, of 67 decitex or more and of which no cross-sectional dimension exceeds 1 mm