Hinge SpecificationsPiano hinge stainless steel set package includes 4 pieces stainless steel hinge, 48 pieces screws. Hinge size: 30 3 cm. Mounting hole size: 4mm Screwdriver*1. Premium MaterialStainless steel hinge made of durable 304 stainless steel with a polished surface that resists rust and prevents misalignment. High quality ensures long-term use, you can use it with confidence. Hinge structureThe stainless steel hinge is designed with 12 holes, the central axis is firmly connected, the gap is small and it is not easy to shake. Both ends of the central shaft are provided with rivet heads to ensure that the shaft does not fall down easily. Easy InstallationHinges all holes are pre-drilled for quick and easy installation. Hinge comes with 12 pre-drilled holes and 48 screws. Wide range of applicationsThe extended hinge is widely used in the areas of piano, DIY, furniture repair, DIY, cabinets, cupboards, doors and windows, garden maintenance and other occasions. Hinges can also be used for hinged lids, hatches, modern boats/yachts/caravans can be used.