Mirror polished 304 stainless steel plate, square leaves with multi-section solid hinge pin, four evenly arranged fixing holes on each leaf, silent lubricating grease filled inside pin to eliminate harsh noise during opening and closing. Suitable for interior solid wood doors, cabinet doors and aluminum partition doors, supporting stable 90° to 180° rotation. Thickened plate delivers outstanding load capacity to prevent sagging after long-term use, waterproof and rust-proof stainless steel fits humid spaces such as kitchens and bathrooms.