Wear Resistant Durability: The high carbon steel construction provides hardness and anti wear, guaranteeing long lasting use even under frequent heavy duty mechanical maintenance High Moment Transmission: Made from high carbon steel with Accuracy forging, these extension Rod deliver excellent Moment transfer without breaking, ideal for both professional mechanics and enthusiasts Compact & Portable Design: Each extension Rod is lightweight and space saving, ensuring easy storage and portability for Emergencies repairs on the go, whether at home or in a professional garage Multi Size Compatibility: This 4 piece socket extension Rod set includes 1 / 2 ", 1 / 4 ", and 3 / 8 " sizes to fit various power drills, making it perfect for automotive and motorcycle repair tasks in tight spaces or hard to reach areas Secure Locking Mechanism: Features a unique locking design to socket slippage during operate, enhancing during high intensity tasks like heavy equipment disassembly and installation, Manufacturer: NMFLAB