The GBH 18V-21 Professional cordless hammer drill stands for powerful hammer drilling and high performance. This performance is ensured by the powerful 2.0 J impact system combined with the versatility and flexibility of the battery hammer drill due to the three different modes for drilling, hammer drilling and chiselling. Weighing only 2.4kg, the handy hammer drill has a good performance to weight ratio and is strong enough for light chiseling. The brushless motor reduces maintenance and improves runtime per battery charge, resulting in less downtime and a longer life of the Bosch hammer drill. The GBH 18V-21 is ideal for use on concrete, stone and masonry and is fully compatible with the GDE 16 plus dust extraction. The GBH 18V-21 Professional also comes with LED light, rotary control coupling, variable speed and Vario lock. The Professional 18V System combines ultimate performance with compact dimensions and minimal weight to make your toughest jobs easier - with professional tools, our strongest batteries ever and the fastest charging solutions. Batteries with superior heat management, longer run time and extended service life support your work efficiency. Since 2008 they have been fully compatible so you can use them for both new and existing tools in the same voltage class.