A coring rig allows you to drill a large diameter hole in a variety of materials, including concrete and asphalt. Frequently used by the mining and construction industries, a core drill can recover a core sampling several hundreds of feet down for testing. The diamond drill bit can cut through concrete and stone with relative ease. A concrete core drill is also used to create holes for piping and manholes as well. Zoro has a great selection of coring bits, dust collector accessories, and dust collectors.