Used to connect the backrest and seat back, adjust the height of the sofa backrest, so that it moves from the sofa to bed During the operation of the equipment, replace the armrest, side, pillow, seat and bed surface Angle adjustment, hidden security installation, gear opening card design, multi-angle, multi-speed Suitable for connecting handrails and seats, backrests, seats, pillows and backrests, armrests, bed frames, etc. High-quality sofa bed hinge, premium metal, strong load capacity. Smooth movement, easy installation, stable support. Perfect for sofa bed, folding sofa and furniture repair., Manufacturer: BgnEhRfL