Features: 5 different sizes, 1/4" 3/8" 1/2" 3/4" 1", selecting based on your needs. 360 flexible rotation, more convenient and labor-saving. Made of CR-MO chrome molybdenum steel material, high temperature and pressure, has strong impact resistance, and is difficult to be damaged by violence. Can be used in narrow areas or around obstacles, and hard-to-reach fasteners can be easily used. Widely used in various scenes, bicycles, automobiles, various mechanical car repairs, etc. Specifications: Material: Chrome Molybdenum Steel Size: 1/4", 3/8", 1/2" ,3/4" ,1" ( optional) Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1X Swivel Joint