This extension bar is made of high quality material. Characterized by high hardness and strength, easy to store and use. A great choice for you. Features: Made of high quality chrome-vanadium steel, this product is sturdy and durable. Use with ratchet handle for hard to reach areas. Integral heat treatment with bright chromium plating, high hardness and strength. Lightweight and small size, easy to store and use. It can be a great choice for all user. Specification: Condition: 100% Brand New Item Type: Extension Bar Material: Chrome-Vanadium Steel Color: Silver Optional Style: Short, Medium, Long, Extended, Whole Set (Short + Medium + Long + Extended) Interface: 1/4"6.35mm) Length: Approx. 53mm / 2.1inch (Short), 76mm / 3.0inch (Medium), 100mm / 3.9inch (Long), 150mm / 5.9inch (Extended) Weight: Approx. 25-169g / 0.9-6.0oz Package List: 1/4 * Extension Bar Package List 1Made of high quality chrome-vanadium steel, this product is sturdy and durable. 2Use with ratchet handle for hard to reach areas. 3Integral heat treatment with bright chromium plating, high hardness and strength. 4Lightweight and small size, easy to store and use. 5It can be a great choice for all user.