90 degree rotation. 4mm thick stainless steel will not rust. Can resist scratches, corrosion and rust. Automatically closes from 25 degrees and self-centers at 0 degrees when in the off position. Glass door automatically closes from 25 degrees and self-centers at 0 degrees in the closed position. The bathroom glass door hinges are made of high quality stainless steel to ensure quality and longevity. Note: suitable for glass 8 to 12 mm thick. Each hinge has a maximum load capacity of 40 pounds and requires no drilling; it is used for various glass cabinet doors, display cabinet doors and cake cabinet doors. Note: The data are all manually measured, please allow 1-3 error cm Due to differences in light and display, there may be color differences, please refer to the actual item received.