Can be disassembled various shapes nuts, screws, hooks, lag screws, and bolt heads ect. Self-adjusts. It can be used in automotive industry, household maintenance, manufacturing industry,construction an. Product is compact and easy to carry. Removable screws,rotating hooks,disassemble flat head screw. R. Using range: 7-19mm all specifications,Length:52*26mm,Net Weight: 163g. The only socket tool that will work for both SAE and metric, cup hooks, screw eyes, threaded hooks..