The square hole drill bit adapter mortise tool fixing bracket is designed for quick and easy installation, making it a convenient addition to your woodworking toolkit. Key benefits Fast and straightforward installation Designed to install quickly and simply, helping you save time on setup and keep your workflow uninterrupted. Professional grade for precise work This tool provides smooth drilling capability, supporting accurate results for serious woodworkers who require reliable performance. Optimized for electric drills Specifically crafted for use with electric drills, offering dependable compatibility and consistent results on projects. Clear size and compatibility Fits electric drills with an exposed clamping part of about 20 mm in width and supports drill bit diameters from 38 mm to 43 mm. Please verify sizes before use. Use scenarios Mortise work in cabinetry and furniture Create precise square mortises for hinges, joints, or other fittings in cabinets, dressers, and tables. Door and frame installations Prepare accurate mortises for door hinges or door frame components where square holes are required. General mortise joinery and repairs Use in home projects and workshop repairs that involve square hole mortise tooling to restore or enhance joints.