Size of the product: socket spanner extension set contains 3-piece 1/4 inch extension in the sizes 2 inches/50 mm, 4 inches/100 mm, 6 inches/150 mm to offer you several options for your tasks. Improved range: with three different sizes for a variety of choices and the flexibility to combine them freely, extend your range and effortlessly reach tight areas. Increased efficiency: the spring-loaded ball lock keeps the sockets securely in place and ensures a stable connection; the knurled handle makes it easier to manually turn loosened fasteners. Robust and durable: Made of high-quality chrome-vanadium steel for durability and reliability, not easy to rust, longer service life. Chrome plated: Visually appealing, fully polished chrome surface that not only improves aesthetics, but is also easy to clean and corrosion resistant.