These musical instrument hinges are made of high-quality materials, practical and durable, and can be used for a long time. Great items to meet your needs such as piano racks, bookshelves, etc. Easy to install. Very suitable for replacing damaged or old ones. Suitable for homes, offices, shops, etc.Features-Color:Golden-Material: Brass-Size: About4.50X2.70X0.50cm/1.77X1.06X0.20inch-Brass hinges, thick bearings, smooth and quiet, not easy to jam.-Widely used in various items, such as piano music stands, bookshelves, doors, etc.-Brass material, higher hardness, not easy to rust, strong and durable.-The surface of the hinge is treated with rust prevention to ensure excellent corrosion resistance, robustness and durability.-Under the action of lubricating the ball bearings, no noise will be generated when opening or closing.Packing list:2 x Hinges