Versatile diamond coring machine for handheld or rig-based coring from 8-162 mm (5/16 – 6-3/8) in diameter. Diameter range: 8 – 162 mm. Base material: Concrete, Reinforced concrete, Asphalt, Masonry. Operation mode: Hand-held and rig-mounted drilling system. 8 – 162 mm. Concrete, Reinforced concrete, Asphalt, Masonry. Hand-held and rig-mounted drilling system. Gear 1: 840 rpm; gear 2: 1640 rpm; gear 3: 3070 rpm. Weight of complete system. 516 x 129 x 159 mm. A-weighted emission sound pressure level. Value for drilling into concrete (wet) with diamond core bit A (ah, DD).