Converts a standard electric drill into a professional mortising tool for clean, square holes in woodworking projects using this adapter fixing bracket. Key benefits Reliable square hole mortising: transforms a drill into a dedicated mortising tool, enabling accurate square holes for joinery and fittings. Stable drilling performance: aluminium alloy construction with a precise clamping system minimizes wobble and prevents bit slippage. Quick and easy to use: simple installation and removal from a hand electric drill in moments with basic tools; no special skills or extra equipment required. Broad compatibility: designed to fit most electric hand drills with a clamping width around 20 mm and shaft diameter from 38 mm to 43 mm for general workshop use. How it works The bracket attaches to your drill and provides a fixed guide for square hole drilling, improving accuracy and repeatability on each mortise. Easy installation Attach or remove the bracket from your hand electric drill quickly using common tools. No specialized tools or advanced setup needed. Compatibility and specifications Material: aluminium alloy Clamping width: approximately 20 mm Diameter range: 38 mm to 43 mm Designed to fit most electric hand drills for general workshop applications Use scenarios Hinge mortises for cabinet doors and furniture where clean square holes are essential. Mortising joints and brackets in timber projects that require precise square holes. Onsite retrofitting of a portable drill to handle mortising tasks in carpentry or DIY projects.