Use this Dewalt SDS hammer drill for drilling anchors and fixing holes into concrete, brick and masonry The Dewalt DCH253N cordless SDS hammer drill with 4Ah batteries will give 33% more runtime than the equivalent model with 4Ah batteries. It makes effortless work of drilling anchors and fixing holes into concrete, brick and masonry from 4mm to 24mm. This model has the best in its class vibration, 6.6m/s reducing user fatigue for maximum comfort upon use. According to the reviews, this drill is so powerful, it is as good as corded equivalent machines. Take the word of these very happy tradespeople: \"No problem when using only one hand as the position of the battery keeps the drill perfectly balanced. By far the best hammer drill I\'ve ever used.\" Features: Ideal for drilling anchors and fixing holes into concrete, brick and masonry from 4mm to 24mm Rotation stop mode for light chiselling in plaster, tiles and render and impact stop mode for rotary only drilling in wood and metal 4.0Ah 18 Volt Lithium-Ion battery, delivers high performance, long life and maximum runtime Best in class vibration, 6.9m/s reduces user fatigue and maximises operating periods Bright white LED with delay feature improves visibility Specification: Voltage: 18 V Power Output: 400 Watts No Load Speed: 0-1200 rpm Impact energy (EPTA 05/2009): 2.1 J Blows per Minute: 0-4500 bpm Tool Holder: SDS-Plus