1. Adjusting the elevator column up and down by manual operation. 2. Has removable chains to prevent legs from sliding. 3. Quick release clamp for option. 4. Closed length: 96cm, opened length: 200cm (include 53.5cm for central column). 5. Adjustable range of the central column: 53.5cm. 6. Size of tripod head: 9cm, flat head. 7. 5/8?? thread. 8. Net weight: 4.4kg.