1. Material: zinc alloy 2. Scope of application: folding door/invisible door/door 3. High load-bearing 180 degree opening and closing, regardless of left and right, completely hidden 4. Multi-layer electroplating, not easy to paint off 5. Four-axis thickened support arm, it is not easy to sag after long-term use 6. Accessories description: with installation accessories and instructions, hexagonal wrench
