CORNING SYSTEM Quick-Switch Option The new DD 130 diamond coring system features a quick-switch option and convenient side-handle water flow. The tool is suitable for jobs ranging from wet coring holes in reinforced concrete from 15/32 in. to 6 in. dia. to precise coring of anchoring holes 15/32 in. to 1 5/8 in. dia. The tool includes a high-performance 1800-watt motor with sizeable reserve power. It also has a multi-faceted design that allows one operator to easily change from hand-held to stand-mounted use with a simple click-action, says the maker. Built-in features to increase operator safety are included as well. Hilti; 800/879-6000; www.us.hilti.com