【Package Content】You will receive 3Pcs 1/4 inch drive extension bar, including 2 inches/50 mm, 4 inches/100 mm, 6 inches/150 mm to offer you several options for your tasks. | 【Durable Material】The extension bar set is made of hardened chrome vanadium steel, durable, not easy to rust, premium chrome vanadium steel tempered with our proprietary heat treatment process to withstand more torque, longer service life. It should be noted that our products only support the use of hand tools. | 【Useful Design】These socket extensions provide extra length to access hard to reach fasteners and are perfect for handling fasteners in tight work spaces, The spring-loaded detent ball ensures that your sockets aren't going anywhere. | 【Improve 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. Improving your work efficiency. | 【Widely Used】This high quality socket extension accessory set includes the sizes and tools you'll need for project. Get the most out of your sockets by purchasing the perfect companion set for them!. These socket accessories provide you with the high quality product you expect and the versatility you need to get the job done now.