Showcase of Butterfly Series wooden door hydraulic damping hinge, no slotting required design cuts installation cost & time. Constructed with premium aerospace aluminum, max load capacity up to 100kg, durable for 100,000 opening & closing cycles. All-in-one functions: automatic door closing, soft self buffer, windproof hold-open positioning, silent anti-slamming latching. Detachable replaceable springs & dampers, eco-friendly stable performance under -30℃~60℃ wide temperature range. Multiple finish options: sand gold, matte black, gunsmoke gray, sand silver, ceramic white. Left & right handed versions available, perfect hardware for interior aluminum doors, aluminum-wood doors, composite wooden doors. This silent hydraulic door hinge eliminates door slamming noise, ideal for door manufacturers, construction decor suppliers & wholesale hardware buyers.