Feature Highlights: 1. Durable Material – Made from high-quality cast aluminum, this square hole drill bracket is wear-resistant, hard-wearing, and built to last. 2. Wide Compatibility – Designed to fit most hand electric drills. Please note: it is not suitable for bench drills or rechargeable hand drills. 3. Size-Specific Design – Supports electric hand drills with a clamping diameter of 38mm–43mm (1.50″–1.69″). Please check your drill size before use. 4. Precision Drilling – A professional woodworking accessory that helps you drill accurate, clean square holes with ease. 5. Quick Installation – Easy to attach and remove—no tools needed. You can set it up or take it off in seconds. Product Details: This square hole drill bit adapter set includes two sturdy fixing brackets made of cast aluminum. It’s built to handle frequent use while maintaining precision. The bracket fits standard hand electric drills (not for bench or rechargeable drills) and is designed for smooth, controlled square hole drilling in woodworking projects. Installation is tool-free and takes just moments. Specifications: - Material: Aluminum - Color: As shown in images - Package Includes: 2 × Square Hole Drill Bit Adapter Note: Slight color variations may occur due to lighting and screen differences. Minimal size tolerance of ±1–3 cm is possible. Only the listed items are included in the package.