Hinge specifications: The package contains 8 black hinges and 48 screws. Hinge size: 67 × 37 mm. Hinge material: The hinge is made of 201 stainless steel with a black coating. High strength, not easy to rust, and corrosion-resistant. Hinge structure: The stainless steel hinge has a 6-hole design, the central axis is firmly connected, the gap is small, and it does not wobble easily. There are rivet heads at both ends of the central shaft to ensure that the shaft does not fall off easily. Easy installation: The stainless steel piano hinge is equipped with compatible screws to meet your needs. They are easy to install and ready to use in minutes. Versatile: The hinge strap can be used for both indoor and outdoor installations in homes and businesses. Install small doors, windows, cabinets, tool boxes, wooden boxes, tool chests, etc.