Exquisite and professional workmanship ensures wear resistance and rust resistance. The ball spring design provides secure connection and helps prevent accidental disconnection. The 360-degree rotating head allows for flexible operation in tight spaces. The recessed interface enables easy wrench insertion. Made from chrome vanadium steel for enhanced durability. Available in three sizes: 1/2 inch, 1/4 inch, and 3/8 inch. Ideal for bicycle, automotive, household, and industrial maintenance applications. Item Name: Universal Adapter Material: Chrome Vanadium Steel Features: Wear-resistant, recessed interface, anti-dropping design Size Details: 1/2: 7cm x 2.4cm / 2.76" x 0.94" (Approx.) 1/4: 4.35cm x 1.48cm / 1.71" x 0.58" (Approx.) 3/8: 5.4cm x 1.8cm / 2.13" x 0.71" (Approx.) Note: Due to lighting and screen setting differences, the actual color may vary slightly from the images. Slight dimensional variations may occur due to manual measurement. Package Includes: 1 x Universal Adapter