Features: *Versatile Application: This Double Ended Drive Socket Set is specifically designed for a wide range of automotive tasks, including tire changes and brake repairs, fitting 8 common lug nut sizes for seamless removal and installation. *Comprehensive Set: The 5-piece set includes essential sizes such as 17mm x 19mm, 21mm x 22mm, 3/4" x 13/16", 7/8" x 15/16", and a 3" extension bar, providing everything needed for most automotive jobs in one package. *Construction: Made from Chromium Molybdenum Steel, these sockets are heat-treated for enhanced toughness, making they withstand heavy use and maintain performance over time. *Erosion Resistance: The manganese phosphate coating on the sockets significantly improves their erosion resistance, extending their lifespan and keeping them in optimal condition for longer. *Enhanced Visibility: The high-contrast printed dimensions are easy to read, even in low light conditions, allowing for efficient work during nighttime or in dimly lit areas without compromising accuracy. Specifications: Product name: Double Ended Drive Socket Set Material: Chromium Molybdenum Steel Color: Black Size:(Approx.) 200*160*60mm/7.87*6.3*2.36 in Suitable for: Electric wrench, etc. Package Content: 4 x Double Ended Drive Socket 1 x Extension rod Note: 1. Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data. [ESSENTIAL SOCKET SIZES INCLUDED] This set features vital sizes like 17mm x 19mm, 21mm x 22mm, and more, plus a convenient extension bar for all your automotive repair needs in one handy kit. [BUILT TO LAST] Crafted from Chromium Molybdenum Steel and heat-treated for strength, these sockets are engineered to endure rigorous use while delivering consistent performance. [LONG-LASTING PROTECTION] The advanced manganese phosphate coating provides excellent erosion resistance, prolonging the lifespan of your sockets and keeping them in great condition. [USER-FRIENDLY DESIGN] With high contrast printed dimensions that are easy to read even in low light, you can confidently tackle repairs anytime without compromising accuracy. [SIZING REMINDER] you consult your own size chart instead of Amazon's size chart for the best fit with your tools.