1. Small size for some special use. 2. Quick release clamp for option. 3. Closed length: 85cm, opened length: 127cm(include 21cm for central column) 4. Adjustable range of central column: 21cm 5. Size of tripod head: 13.4cm, flat head. 6. 5/8?? thread. 7. Net weight: 5.6kg.