<b>Specification:</b><br> A drill-press mortising attachment can be just as effective and it costs a lot less.<br> They all have three basic components: a fence, a chisel holder and a hold-down.<br> The diameter of the clamping part of the square hole drill used in this product is also required.<br> The vertical distance between the bench drill chuck and the workbench is at least 300MM, otherwise it cannot be installed.<br> Mortising attachments are available for almost every drill press. It’s easy to install and a joy to use. <br><br> <b>Features: </b><br> Mortising attachment comes with four popular mortising chisel and bit sets.<br> 1/4-inch, 5/16-inch, 3/8-inch, and 1/2-inch set.<br> Also includes a handy carrying case that holds everything for easy storage.<br> Offers large 4-inch capacity under hold-downs, 2-3/4-inches from ends of hook rods to fence.<br> Also fits drill presses with quill diameters of 66-milimeters, 50. 8-milimeters, 48-milimeters, and 38-milimeters.<br><br> <b>Description: </b><br> Material: steel<br> Case size:45*35*20cm<br> Upper aperture: 65mm<br> Lower aperture: 19mm<br><br> <b>Pakcaing：</b><br> 1*Locator Set (excluding bench drill)<br> 1*User's Manual<br><br>