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Match a documented SDS rotary hammer to concrete hole size and the batteries you intend to use.
SDS bits move within a dedicated holder while the hammer mechanism supplies impacts. Confirm SDS-plus versus SDS-max before buying bits. These shortlisted compact rotary hammers are not a substitute for a core drill or a demolition hammer. Work within the specific tool’s rated material and accessory capacities.
A 21 mm published capacity establishes a different limit from drilling many 20 mm holes quickly. For repeated heavy work compare impact energy, duty cycle, vibration and dust extraction support in the manufacturer’s documentation. Those fields are not complete across this catalogue, so this selector does not award a performance winner from them.
Some models support rotary drilling with compatible accessories, but their weight and mechanism are rarely the most practical choice for everyday screws. Use the general drill finder or impact driver selector for fastening.