Discover our durable 3 Piece Knurled Extension Bar Set, designed for 3/8" square drive applications. This set includes three extension bars of varying lengths - 75mm, 150mm, and 225mm - all crafted from premium forged Chrome Vanadium steel. Each bar is heat treated and chrome plated to achieve a stunning mirror finish that not only enhances durability but also provides resistance against corrosion. The deep knurling on the shafts ensures a secure grip, allowing for effortless spinning off of fixings. Equipped with spring-ball socket retainers, these extension bars securely hold your sockets in place, making your work more efficient and safe. Whether you're a DIY enthusiast or a professional tradesperson, this extension bar set is essential for completing a wide range of tasks. We pride ourselves on offering a comprehensive selection of tools and workshop equipment, with over 10,000 items available to meet any project requirement, big or small. If you need assistance finding the right tools for your needs, our friendly customer service team is ready to help. Experience quality and reliability with our lifetime guarantee on this extension bar set.