The 9" Length 1/4" Hex Driver Flexible Extension in silver tone are made of chrome-vanadium steel, ensuring durability and strength. The flex extension design allows for greater flexibility and access to tight spaces, making it a versatile tool for various hand tools and workshop equipment needs. With a hex drive size of 6.35mm/1/4", this product is perfect for reaching into confined areas and providing a comfortable grip for extended use. Ideal for home and garden projects, these extension bars offer convenience and reliability.