in subheading 5402.49.91) 0.6% No change No change On or before 12/31/2024 . 4847. Polypropylene (PP) monofilament Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.26.67 Synthetic monofilament of polypropylene, of 67 decitex or more and of which no cross-sectional dimension exceeds 1 mm (provided for in subheading 5404.12.90) Free No change No change On or before 12/31/2024 . 4848. Acrylic fiber tow with an average decitex of 0.9 Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.26.68 Acrylic filament tow containing at least 85 percent but not more than 94 percent by weight of acrylonitrile units and 1 percent or more but not over 4 percent of water, raw white (undyed), crimped, with an average decitex of 0.9 (plus or minus 10 percent) and an aggregate filament measure in the tow bundle between 660,000 and 1,300,000 decitex, with a length greater than 2 m (provided for in subheading 5501.30.00) Free No change No change On or before 12/31/2024 . 4849. Black polyester bi-component fibers Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.26.71 Synthetic staple fibers, not carded, combed or otherwise processed for spinning, the foregoing comprising black polyester bi-component fibers measuring between 4.4 and 6.7 decitex and with fiber length between 50 and 51 mm