1. Tray size: 39x29cm 2. Interface screw: 3/8 3. Maximum working height: 1400mm 4. Minimum working height: 550mm 5. Pipe diameter size: 25.5-21-17.4mm 6. Tube wall thickness: 1.2mm 7. Material: aluminum alloy + ABS material, good stability, maximum load-bearing 15kg, 8. The net weight of the product is 2.48kg, the color is silver