Features: 1. Application: auto repair, home decoration, ship, aerospace and other fields of specialized repair tools. 2. Using high-quality steel, wear-resistant, wear-resistant, and long service life. 3. The anti-dropping steel ball is better fixed: the self-locking device is not easy to slip or fall off. 4. After installation, the joint can be converted into a square head, which can be used for the installation of the sleeve. 5. Suitable for screwdriver handle or electric screwdriver tool three-jaw chuck to drive the sleeve. Notice: *Actual color may be slightly different from the image due to different Display and light effect *Please allow 1-3cm deviation due to manual measurement Description: Size: 29*13.9mm Package List: 1 pcs x 3/8 Socket Sleeve Adapte