2.2 and a fiber length of 38mm Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.13.07 Modacrylic staple fibers containing 35 percent or more but not over 85 percent by weight of acrylonitrile units and 2 percent or more but not over 3 percent of water, not pigmented (ecru), crimped, with an average decitex of 2.2 (plus or minus 10 percent) and fiber length of 38 mm (plus or minus 10 percent) (provided for in subheading 5503.30.00) Free No change No change On or before 12/31/2020 . 1190. Modacrylic staple fibers with an average dexitex of 2.2 and a fiber length of 51mm Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.13.08 Modacrylic staple fibers containing 35 percent or more but not over 85 percent by weight of acrylonitrile units and 2 percent or more but not over 3 percent of water, not pigmented (ecru), crimped, with an average decitex of 2.2 (plus or minus 10 percent) and fiber length of 51 mm (plus or minus 10 percent) (provided for in subheading 5503.30.00) Free No change No change On or before 12/31/2020 . 1191. Modacrylic staple fibers with an average decitex of 1.7 and a fiber length of 51mm Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.13.09 Modacrylic staple fibers containing 35 percent or more but not over 85 percent by weight of acrylonitrile units and 2 percent or more but not over 3 percent of water, not pigmented (ecru), crimped, with an average decitex of 1.7 (plus or minus 10 percent) and fiber length of 51 mm (plus or minus 10 percent) (provided for in subheading 5503.30.00) Free No change No change On or before 12/31/2020 . 1192. Acrylic staple fibers with a fiber length of 38mm Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.13.10 Acrylic staple fibers containing at least 85 percent by weight of acrylonitrile units and 2 percent or more but not over 3 percent of