Features: 1.Premium Material: Seat recliner is made of premium cold rolled steel material, rustproof, scratch resistant, high hardness, sturdy and durable. 2.Professional Design: Professional manufacturing, exquisite workmanship, improve maneuverability and stability, help improve driving comfort. 3.Function: Seat back hinge recliner can be adjusted from 0 to 180, high accuracy, you can adjust the seat as you like, can be placed completely flat. 4.Easy Installation: Includes 2pcs seat back hinged recliners, easy to install, backrest installation size is 80mm, seat installation size is 100mm. 5.Wide Application: RV, boat, commercial vehicle and any other need to modify the seat can be used, has a wide range of application. Specification: Item Type: Seat Recliner Material: Cold Rolled Steel Adjustment Angle: 0-180 degrees Installation Size: Backrest installation size approx. 80mm/3.15in, seat installation size approx. 100mm/3.94in Adjustment Accuracy: 2.8 degrees Handebar Lock Force: 34N-50N Single Double Lock: Single lock Applicable Scenario: RV, boat, commercial vehicle and any other need to modify the seatcan be used