Feature:1. Wide Use: Seat angle adjuster is suitable for RVs, trailers, trucks, construction vehicles, modified vehicle seats, etc.2. Multi Angle Adjustment: The seat back adjuster can be flexibly adjusted from 0 to 180 °, users can choose the most suitable sitting angle according to their own preferences and needs.3. Comfort Enhancement: By adjusting the angle of the seat back, you can change the posture and support point of your body, thus enhancing ride comfort.4. Strong Support: Seat angle adjusters are made of high strength materials with sturdy construction and reliable support for increased ride safety.5. Durable Material: The seat back hinge recliner is made of high grade heavy duty steel for rugged durability and has a black painted exterior to resist oxidation for long lasting durability.Specification:Item Type: Seat Manual Angle AdjusterAdjustable Angle: 0 to 180°Material: SteelHandle Unlocking Force: 34N to 50NFor: Left side seat adjustmentUsage: Suitable for RVs, trailers, trucks, construction vehicles, modified vehicle seats, etc..Package List:1 x Seat Angle Adjuster (10 Accessories)Note:Installation requires punching holes for fastening, we recommend that you seek the assistance of a professional mechanic to ensure the best possible shopping experience