Ideal for drilling anchor fixing and through holes in concrete and masonry from 12 to 40 mm in diameter core drilling up to 90 mm chain drive improves durability and increases efficiency together with an oil filled gearbox to ensure total component lubrication and superior heat dissipation ergonomic compact and slim line design maximises control and offers easy access to confined spaces excellent power to weight ratio 8 joules of impact energy delivered by a 61 kg hammer rotation