When using a lock and chain to secure your bike, the best case is to find something immovable to lock it to; be it a bicycle rack, metal gate, or a lamppost. If you don’t have anything suitable ...
The cordless TE 7-A rotary drill offers a 5/16- to 3/4-in.-diameter optimum drilling range, suitable for drilling anchor holes and through-holes, as well as light chiseling, in concrete and masonry.