foregoing with a power output exceeding 149.2 kW but not exceeding 150 kW (provided for in subheading 8501.53.60) Free No change No change On or before 12/31/2020 . 1494. Alternating current generators for exercise equipment Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.16.15 AC electric generators, each with a flywheel and an eddy-current loading device, the load being controlled magnetically (provided for in subheading 8501.61.00), designed for use in exercise equipment of subheading 9506.91 Free No change No change On or before 12/31/2020 . 1495. Electric generating sets with natural gas engines Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.16.16 Electric generating sets, each with spark-ignition internal combustion piston engine fueled by natural gas (provided for in subheading 8502.20.00) 1.9% No change No change On or before 12/31/2020 . 1496. Stator and rotor core laminations Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.16.17 Stator core and rotor core laminations, imported in pairs each comprising one stator core lamination and one rotor core lamination