- Material and durability: Made from premium aluminum, the square hole opener bracket is wear resistant, highly robust, and designed for a long service life to withstand repeated use in woodworking projects. - Efficient and convenient: This square hole drill bit adapter bracket is a professional woodworking tool that opens square holes in seconds, significantly boosting overall workflow and becoming a reliable ally for woodworkers. - Universal design and compatibility: The square hole drill guide supports 38 to 43 mm electric drill chucks and features a clamping diameter of 19 mm, helping ensure accurate and smooth drilling. - Easy to use: Opening square holes with this tool is straightforward and user friendly, permitting quick installation or removal. Easy and convenient for use, even beginners can master it for seamless woodworking projects. - Practical applications: - Furniture and cabinetry work that requires precise square mortises for connectors or hardware. - Joinery and panel work where consistent square holes improve fit and alignment. - Repetitive prototyping or stock drilling tasks in a shop, enabling quick, repeatable square holes across multiple pieces.