Userfriendly installation: This square hole drill bit adapter enables fast installation and removal, providing convenience during woodworking tasks and minimizing downtime. Essential woodworking tool: Suitable for both amateurs and professionals, this fixing bracket helps ensure smooth drilling operations and is a musthave in your toolkit. Compatible with electric drills: Specifically designed to work seamlessly with electric drills, improving performance on a range of woodworking projects. Size accommodation: Fits electric drills with an exposed clamping part about 20mm wide and supports drill diameters from 38mm to 43mm. Please verify sizes before use. Use scenario: Ideal for cabinet and furniture projects that require square holes for brackets, hardware mounting, or dowels, enabling precise and secure fittings. Use scenario: Suitable for workshops with repetitive drilling tasks, where quick bit installation and removal reduces downtime and improves workflow. Use scenario: Appropriate for projects involving largediameter holes in panels or workpieces, leveraging electric drills for efficient squarehole drilling within the 38–43mm diameter range.