Features: 1.Solid Construction: Made from heavy duty cold rolled steel, the seat back hinge recliner is sturdy and durable. Its black painted exterior effectively resists daily wear and tear. 2.Adjustable Angle: The seat back recliner handle lever is adjustable from 0 to 150 degrees, allowing users to find their desired seating position and comfort. 3.Wide Application: This seat backrest recliner is ideal for use in RVs, caravans, and motorhomes, providing additional comfort and convenience during travels. 4.Replacement and Retrofitting: It can be used as a replacement or refurbishment for old or damaged seat angle adjusters. It is also suitable for retrofitting or adding projects. 5.Easy Installation: The seat back hinge recliner is designed for easy installation, allowing users to quickly and effortlessly upgrade their seating experience. Specification: Item Type: Seat Angle Adjuster Material: Cold Rolled Steel Adjustment Angle: 0-150 Degrees Handle Unlocking Force: 34N-50N Function: For seat left side adjustment Usage: Caravan, trailer, truck, engineering vehicle, modified car seat and other applications.