<p><strong><em>A square hole drill is not compatible with a regular electric drill. To drill square holes, a special square hole drill (mortising machine) is required. The construction of this tool combines the mortising and tenon technique with a stable + an outer sleeve in the middle.</em></strong></p> <p><em><img alt="" src="https://cdn.shopify.com/s/files/1/0019/9563/6809/files/03_71f13298-750b-46a4-a43c-8052b4927b78_large.jpg?v=1544237363"></em></p> <p><strong><span>The hollow chisel mortising tool makes your craftsmanship easier</span><br></strong></p> <p>Why waste valuable time and effort chiseling square holes and struggling with your tools? This fantastic premium square hole drill will stand by your side!</p> <p>With this premium square hole drill, you create your square holes effortlessly and precisely. It ensures<span><strong>to prevent frustration</strong></span>and<span><strong>to save your time</strong></span>while you complete your projects successfully.</p> <h3><span>Features</span></h3> <ul> <li><span>Square hole drill for woodworking</span></li> <li><span>Reduces the physical effort for workers, increases the speed of building, and lowers costs in construction, installation, renovation, and decoration.</span></li> <li><span>Application: The square hole drill is mainly used in woodworking.</span></li> <li><span>Standard drills can only work with round holes; square holes cannot be processed with them. To create a square hole, a rough hole must first be drilled, which is then manually processed with a chisel. The utility model is used in the drilled hole, while the hammer blows are transmitted to the outer body, crushing the material and shaping both round holes and the walls of the square head. The square hole is processed in a single operation, and the dust can be channeled through the pipe.</span></li> <li><span>With square hole drills in different specifications and matching the respective power of the square hole machine, you can produce square holes that meet your requirements.</span></li> </ul> <p><img alt="" src="https://cdn.shopify.com/s/files/1/0019/9563/6809/files/61bj0O9W8gL._SL1000_large.jpg?v=1544235907"></p> <h3><span><strong>Technical Data</strong></span></h3> <ul> <li><span>Material: High-speed steel.</span></li> <li><span>Hardness: 56HRC.</span></li> <li> <span>Shaft diameter</span><br><span>1/4 INCH (6.4MM)</span><br><span>3/8 INCH (9.5MM)</span><br><span>9/16 INCH (14MM)</span><br><span>5/8 INCH (16MM)  </span> </li> <li><span>Diameter of the central hole: Total length: 19.5 cm / 7.68 inches; Diameter: 6.8 mm / 0.27 inches</span></li> <li><span>A square hole drill cannot be used with an electric drill. To drill square holes, a special square hole drill (mortising machine) is required. The mortising and tenon construction is supported by the stabilizing + an outer sleeve in the middle.</span></li> </ul> <p><img alt="" src="https://cdn.shopify.com/s/files/1/0019/9563/6809/files/X1_d803efda-9925-4f3a-a7d2-684799f12799_large.jpg?v=1544237458"></p> <h3><span><strong>Delivery Contents</strong></span></h3> <ul> <li>TYPE1: 1/4 INCH (6.4MM) + 3/8 INCH (9.5MM).</li> <li>TYPE2: 1/4 INCH (6.4MM) + 3/8 INCH (9.5MM) + 9/16 INCH (14MM).</li> <li>TYPE3: 1/4 INCH (6.4MM) + 3/8 INCH (9.5MM) + 9/16 INCH (14MM) + 5/8 INCH (16MM).</li> </ul>