Concrete Corers Equipment Hilti Concrete Corer DD 150-U Hand Held - Electric Code: 1145 Versatile diamond drilling tool for handheld or rig-based coring up to 160 mm (6-1/4”) Diameter range: 8 - 162 mm Base material: Concrete, Masonry Operation mode: Hand-held or rig-mounted drilling system Hilti Concrete Corer DD 200-U Hand Held - Electric Code: 1173 Heavy-duty diamond drilling rig for coring medium and large diameters up to 500 mm. Diameter range: 35 - 500 mm Rated input voltage: 230 V Base material: Concrete