With 55% more torque than its predecessor and a lower first gear for faster coring and improved drilling on holes more than 8 inches in diameter, the DD 200 diamond coring system is designed to work in masonry and reinforced concrete. Improved motor control lights provide easier operator training, optimize coring, and simplify selection of the optimum gear from the 3-speed gearing. Hilti Inc. 800-879-8000. www.us.hilti.com