more but not more than 5 decitex and having a fiber length each measuring 0.5 mm or more but not over 2 mm (provided for in subheading 3908.10.00) Free No change No change On or before 12/31/2025 . 11601. Short star-shaped nylon 6 fibers Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.34 Star-shaped nylon 6 (CAS No. 25038–54–4) fibers, measuring 50 or more but not more than 200 decitex and having a fiber length each measuring 0.5 mm or more but not over 5 mm (provided for in subheading 3908.10.00) Free No change No change On or before 12/31/2025 . 11602. Short heart-shaped nylon 6 fibers Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.35 Heart-shaped nylon 6 (CAS No. 25038–54–4) fibers, measuring 150 decitex and having a fiber length each measuring 0.5 mm or more but not over 2 mm (provided for in subheading 3908.10.00) Free No change No change On or before 12/31/2025 . 11603. PA510 polymer compounds Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.36 Mixtures containing poly(imino-1,5-pentanediylimino(1,10-dioxo-1,10-decanediyl)) PA510 (CAS No. 105063–19–2) (provided for in subheading 3908.90.70) Free No change No change On or before 12/31/2025 . 11604. MXD6 polymer compounds Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.37 Compounds in which hexanedioic acid, polymer with 1,3-benzenedimethanamine (MXD6) (CAS No. 25728–70–1) is the predominant polymer resin (provided for in subheading 3908.90.70) 2.2% No change No change On or before 12/31/2025 . 11605. PA10T polymer compounds Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.25.38 Compounds in which poly(iminocarbonyl-1,4-phenylenecarbonylimino-1,10-decanediyl) (PA10T) (CAS No. 24938–74–7) is the predominant polymer resin (provided for in subheading 3908.90.70)