measuring 35 cm or more but not over 50 cm in length, 35 cm or more but not over 50 cm in width and 2 cm or more but not over 10 cm in height (provided for in subheading 8483.60.80) 0.1% No change No change On or before 12/31/2020 . 1483. Ring gears Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.16.04 Ring gears, with diameter 30 cm or more but not over 200 cm and height of 6 cm or more but not over 30 cm, the foregoing to be assembled onto the periphery of a flexplate or flywheel for a diesel engine ranging in cylinder capacity equal to or greater than 5,000 cc but not exceeding 95,000 cc (provided for in subheading 8483.90.50) 1.4% No change No change On or before 12/31/2020 . 1484. Electromechanical rotational actuator assemblies Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.16.05 Electromechanical rotational actuators, each with attached actuator arm and pin (such arm measuring between 12 mm and 15 mm in length and with pin diameter of 8 mm), of an output of 36 W (provided for in subheading 8501.10.60) Free No change No change On or before 12/31/2020 . 1485. Power back door actuator assemblies Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.16.06 Power back door (liftgate) actuator assemblies for the motor vehicles of headings 8701 to 8705, each consisting of a brushless electric DC motor that generates between 350 and 400 W, an electromagnetic clutch, a clutch magnet, a clutch flywheel, a clutch plate, a sensor and a housing (provided for in subheading 8501.31.40) 2.3% No change No change On or before 12/31/2020 . 1486. Direct current pump motors Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.16.07 DC motors of an output between 190 W and 290 W, weighing less than 1 kg, each in a cylindrical housing with height of approximately 55 mm and a radius of approximately 45 mm