1. Material: metal 2. High and low free adjustment 3. Sturdy and durable, strong bearing capacity 4. Secondary quenching treatment, high hardness 5. The handle is comfortable to hold and not easy to break 6. Bold stainless steel wave high strength spring 7. Thickened steel support sheet, durable and not deformed 8. All-steel base with tie bars, good support and more stability 9. Quickly lower the height by just pressing the platen lightly 10. Scope of application: raise the tile, raise the bed, raise the sofa, raise the coffee table 11. Size: open type: 2.5x5.5x9cm, FQ-01: 8x6x19cm, FQ-02: 26x5.5x8cm, FQ-02 plastic type: 26x5.5x8cm, FQ-03: 20x7.5x8.5cm, FQ-02 black: 25.8x8.3x16.8cm, FQ-05: 25.2x8.4x17cm, black gold steel A: 25.5x7x6cm, black gold steel B: 38x7x6cm, trident 188: 20x8.4x9.2cm, trident 288: 9.2x8.4x30cm, FQ- 01 solid section: 6x8x19cm 12. Weight: open type: 145g, FQ-01: 450g, FQ-02: 500g, FQ-02 plastic type: 510g, FQ-03: 530g, FQ-02 black: 500g, FQ-05: 500g, black gold steel A: 570g, black gold steel B: 650g, trident 188: 660g, trident 288: 760g, FQ-01 solid type: 530g