Product description: Material: Zinc alloy total length: about 80mm/3.15inch, width: 30mm/1.18inch, thickness: 2mm Color: Silver Package Included: 6 * Tray Hinge 36 * Screws Material:Folding Flip Hinge high quality adoption in zinc alloy, smooth surface, abrasion resistant, high hardness. Great helper: Very high quality mechanism, 180 degree or 90 degree flexible rotation angle, which slowly pulls the surface of the table and closes for quiet, silent movement. Package includes: 6 x hinges; size: about 80 x 30mm3.15x1.18inch, thickness: about 2mm. Easy to install: Confirm the installation position, install after drilling and tighten the screws. Wide Application: Folding hinge works great for bookshelf, table; doors and folding table etc.