The DD 350 Coring System is a diamond-coring machine powered by a water-cooled, high-frequency brushless motor rated at 3,600 W. It features 10-speed electronic gearing, which allows for constant power output over the entire diameter range. The Iron Boost function provides extra performance for coring through rebar. The DD 350 can be used in many coring applications, including drilling corner holes, penetrations for pipes and cables, large-diameter drilling and coring in heavily reinforced concrete. Hilti; 800-879-8000; www.us.hilti.com
The Makita BO5041K is a 5-in. random-orbit sander that features a 3-Amp motor with a variable-speed control dial and a large 1⁄8-in. random-orbit action. The adjustable front handle allows for the sander to be used in confined spaces and tight corners. It has a high-capacity, through-the-pad dust collection system, with a built-in vacuum port adapter. The sander uses 5-in., eight-hole, hook-and-loop abrasive paper. Makita; 800-462-5482; www.makitatools.com