There are many mounting holes, which makes installation firmer. This hinge has brushed surface and fine workmanship. The mounting hole adopts concave design, which is more secure to install, and it will not hurt your hand during use. This hinge can be folded 180 degrees. Adopting premium copper material, this hinge is anti rust and anti corrosion. The length of this hinge is 7cm, width is 3cm, and the thickness is 0.25cm. The diameter of the hole is 0.5cm. It can be used for many folding tables, sewing machine tables, desktop, dining table and wardrobe. Item Name: Semicircle Folding Hinge Material: Copper Size Details: Size: 7cm x 3cm/2.76" x 1.18" (Approx.) Hole Diameter: 0.5cm/0.20" (Approx.) Thickness: 0.25cm/0.10" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Semicircle Folding Hinge 6 x Screws