Features:OOTDTY 5 gears are adjustable, the maximums angles is 180 degrees.Suitable for sofas, coastline chairs, fishing chairs, folding beds and other folding furniture.Drivens through springs, the inclination of armrests, backrests, pillows and seats are adjusted in a fitting manner.Made of iron material, durable.designs, no for sharply edges and corners, more secure and beautiful.Specifications:Material: IronSurfaces Zinc-White PlatingColor: Silver(As Picture Shows)Hole Size: 6.5mm/0.26inchLength: 15cm/5.90inchPipe Diameter: 16mm/0.63inchThickness: 2mm/0.08inchGear Part Thickness: 2.3mm/0.09inchNumber of Gears: Fifth Gears a hundred and eighty DegreesPackage Includes:2x Folding Sofa HingeNote:1.Please allow 1-2cm errors because of guide measurement, make sure that you do not intellect before you order.2.Due to the adaptation between assorted monitors, the image won't reflect the actual colour of the item.