1.Box Case folding hinge, , long time for use, easy installation.2.180 degree rotating. 3.one box needs at least two hinges (Left and Right Hinges)4.Suitable for home office cupboard, closet, cabinet, showcase doors, window, box etc. Install by screw, here is not included.Note: The size in the option refers to the fold length x plate thickness Specification:Material: Metal;Finish: Nickel PlatedPlate Thickness: 1 mm / 0.04 inch;Package Content: 1Pair x Furniture Lid Hinge;Mounting Hole Diameter: 4 mm/0.16 inch; Open Size:260 x 26 x 14 mm /10.24 inch x 1.02 inch x 0.55 inch(Max.L*W*H)Folded Size: 140 x 26 x 14 mm/5.5 inch x 1.02 inch x 0.55 inch(L*W*H);.