Check out the coring rig options at Grainger when you're looking for heavy-duty core drills that can drill through metal, concrete, block and stone. A handheld core drill can drill holes up to 4" dia. and can be helpful for running electrical conduit and plumbing pipes through walls and floors. Get a larger capacity diamond coring rig with a base to help drill holes up to 14" dia. Choose the type and drill bit size that will fit your application. Shop Grainger today for a rugged coring rig to help quickly and easily drill holes through solid materials.