EXCELLENT MATERIAL: Folding flip top hinge are made of solid stainless steel, which has a smooth surface, rustproof and corrosion resistant.Stable and durable, no deformation. HIGH QUALITY MACHANISM: The high quality mechanism make backflap hinge slowly pull the table surface and close for a smooth silent motion and the design of 270 degree folding hinge makes it more flexible. LONG LIFE: No need for opening, easy installation, long service life, can withstand more than 50,000 times of opening and closing. Metal hinge can slowly pull the surface of the table and close it to achieve smooth and silent movement. ROUND EDGE DESIGN: The 270 degree folding hinge has a round edge, providing additional protection for people install.NO sharp edged round edge design, stylish appearance, sturdy structure, super load bearing, durable. WIDE APPLICATION: The stainless steel hinge can be applied to many home installation, like desk computer, sewing machine, window, doors, folding chairs, cabinet, etc. color: silver size:81x31x1.5mm The number of shipments:4 Note: Other items are not included here, other pictures only show the effect Due to differences between different monitors, the pictures may not reflect the actual color of the item. because of manual measurement. Please allow for deviations. Thanks!