Userfriendly installation: The square hole drill bit adapter enables fast installation and removal, reducing downtime during woodworking tasks and providing convenience. Essential woodworking tool: Suitable for both amateurs and professionals, this fixing bracket helps ensure smooth drilling operations and is a reliable addition to any toolkit. Compatible with electric drills: Specifically designed to work seamlessly with electric drills, enhancing performance on a variety of woodworking projects. Size accommodation: Fits electric drills with an exposed clamping part about 20 mm wide and accepts diameters from 38 mm to 43 mm. Please verify sizes before usage. Practical applications: Use in furniture and cabinetry projects to create squarehole openings for hardware fittings or brackets. Quick modification tasks in the workshop that require reliable squarehole drilling with standard drill equipment. Replacements or upgrades where fast bit changes and consistent performance help minimize downtime. Specifications at a glance: Clamping width: 20 mm Applicable hole saw diameters: 38 mm – 43 mm Compatibility: Electric drills Installation: Fast and simple, with easy removal when needed