Jet - 708589K JFM-5: Floor Mortiser with Closed Stand Heavy-duty cast iron and steel construction provides durability and stability during use Dependable rack-and-pinion head adjustment gives you accurate drilling control Long, multi-position mortising handle let you reposition the feed handle for easier operation and optimum handle position Three-jaw drill chuck keeps a positive grip on mortising bits with up to 1-1/8-inch diameter shanks Two hinged side doors allow easy access to the drill chuck