The corner device is made of high-quality chrome vanadium alloy steel, providing a durable and secure grip. It features a built-in strong magnet for solid clamping force and quick screwdriver bit replacement. 90 degree angle: This 90 degree angle adapter for power tools helps you reach screws around corners and in tight spaces where a straight bit cannot fit. Quick bit change and broad compatibility: Quick and easy screwdriver bit changes are possible. It is compatible with screwdrivers, hole saws, electric drills, and sockets, and can extend to areas beyond the reach of drills. Flexible extension and drive options: The flexible drill extension can be connected to drills, cordless drills, or manual wrenches to reach inaccessible tight places and tighten screws, nuts, and other fasteners. Suitable for light or slow drills with screw drive such as cordless drills and ratchet hand screwdrivers. Use scenarios: - Install cabinet hardware or assemble furniture where screws sit in corners or tight spaces. - Reach screws located behind panels, under sinks, or inside electrical enclosures. - Perform projects requiring frequent screwdriver bit changes with screwdrivers, drills, or sockets.