Easy to use, user-controlled adjustable joint for armrests, headrests, backrests and similar fittings. Designed to give precise, repeatable positioning with minimal effort and fast assembly. Key benefits Simple, intuitive operation: easily change and lock joint positions so users can sit or lean according to need. Versatile compatibility: works with a wide range of applications that require joint position adjustment — armrests, headrests, backrests and other adjustable fittings. Saves time and effort: quick assembly and straightforward controls cut installation and setup time. Improves comfort and ergonomics: enables precise positioning to support posture, reduce strain, and increase user comfort. Features and attributes Function: adjustable joint mechanism for reliable position control and repeatable settings. Compatibility: designed for use on armrests, headrests, backrests and similar adjustable components. Ease of assembly: engineered for fast, straightforward installation so the product is ready to use with minimal tools or steps. User control: allows users to choose seating or leaning positions independently and lock or release the joint as needed. Performance: stable, secure joint positioning suitable for regular use in seating and support applications. Typical use scenarios Office chairs: adjust armrest and backrest positions so individual employees can set a comfortable, ergonomic posture for work. Automotive or transport seating: fine-tune headrest and backrest angles to improve passenger comfort on long trips. Recliners and lounge furniture: set and lock different reclining angles for relaxing, reading, or watching TV. How it solves problems Eliminates guesswork: clear, repeatable adjustments remove the need for trial-and-error positioning. Reduces discomfort: by enabling precise support where needed, it helps reduce shoulder, neck and back strain. Lowers installation time and maintenance: easy assembly and simple controls mean less downtime and fewer service calls. What to expect A straightforward, reliable joint that makes adjustable furniture and seating components easier to use and maintain. User-directed control over seating and support positions, improving comfort and adaptability without complicated mechanisms. Easy to use, generally used for various joint position adjustments such as armrests, headrests, backrests, etc. User can, according to need, choose to sit or to rely on the support and can self-control. Easy to assemble.