Design: hand-operated lifting sawtooth design tight clamping position high stability; I-shaped structure not easy to break and bend. Features: high quality plastic chuck strong and solid; high quality aluminum alloy environmentally friendly material long service life. Manufacturered by HELLEN. Applicable scenes: outing sketches art exhibitions photography exhibitions commercial exhibitions; shopping malls shop slogans weddings; indoor or outdoor can be used. Service: If you have any requirements please feel free to contact us and we will respond to your message within 24 hours. Material: lightweight Aluminum.