The VIM Tools ILEX400USA is a USA-made 5-piece 1/4″ drive impact locking extension set designed for secure socket retention during high-torque applications. Each extension is heat-treated for strength and built from durable alloy steel. The locking mechanism prevents sockets from falling off in tight or hard-to-reach areas, improving efficiency and safety. The set includes 3″, 6″, 12″, 18″, and 24″ extensions, providing a full range of reach options for automotive and industrial service work. Backed by VIM Tools’ lifetime warranty (excluding abuse).