Feature: Material: Cold rolled steel Net weight: 3 OZ/ piece Opening angle : 95 degree Diameter of hinge cup : 1.4IN Size: 5.5 x 3.9 x 1.4 inches Operation guide: 1.Check if your hinge is integrated, if not, please put them together. 2.Fix hinge on the cabinet door. 3.Adjust the angle and length by 2 screws. 4.Please check up. Note: Only after hinge putted to fitted position, the cabinet door could be closed properly and slowly. If there is any trouble in the process, please contact customer service executive, thanks!