You use a Makita hammer drill for demanding drilling jobs in very hard materials. With the hammer function, you can drill in natural stone and concrete, for example. A Makita hammer drill works on the power grid or a battery. Choosing a Makita cordless hammer drill? You can also work in places without a socket. The size of the holes depends on the impact power of the Makita hammer drill. Want to drill holes with a 5 to 22mm diameter? An impact power up to 3J is enough. We call a Makita hammer drill 18V with a roatation stop a combi hammer.