Heavy-duty adjustable hinge for sofa, 1 piece, triangular support for wall bed, folding lifting mechanism

Heavy-duty adjustable hinge for sofa, 1 piece, triangular wall bed support, folding lifting mechanism. Features: Brand new and high quality. Sofa support frame, more precise positioning. Easy to install, can be changed in size, saving money and space; no need to buy other tables to take up more space. High-quality steel folding frame, precision manufacturing, sturdy and durable, strong safety. The product has low noise, a long telescopic range, stable operation, and is easy to install and use. 19 levels to adjust the height angle of the pillow on beauty beds, massage beds, and medical beds. Surface treatment: Color zinc plating. Package includes: 1 pc x hinge