The compact powerhouse gbh36vec cordless hammer drill with extras as powerful as corded up to 160 drilled holes 6 x 40 mm in c3037 concrete with one battery charge ideal for indoor use with a weight of only 29 kg it is ideally suitable for overhead work pneumatic hammer mechanism optimised for drilling holes of 4 12 mm in concrete max 18 mm innovative cool pack batteries ensure optimum heat dissipation and therefore increase lifetime by up to 100 cf li ion batteries without cool pack more than