Description This 3-in-1 electric rotary hammer drill can effectively complete your work projects and brings convenience to your life. The hammer drill has a powerful copper motor with 0-4260/min impact rate and 960 r/min no-load speed to quickly accomplish all kinds of work. 3 functions including drill mode, hammer mode and hammer drill mode can apply to different working tasks with variable speed trigger to control the suitable speed by yourself. Why choose the ERGOMASTER Hammer Drill? ★Light weight and ergonomically designed handle to reduce fatigue when holding ★Variable speed can be controlled by your own finger ★Bidirectional switch can make drill forward or reverse to remove stuck drill ★SDS-plus quick change drill chuck has maximum impact energy transfer ★Safety clutch can protect the tool will guarantee the user’s safety ★Large capacity lithium-ion runs constantly ★Come with a convenient charger to always keep ready for work ★UL-certificated wire ensures the better quality ★Full drill set can meet overall needs Specifications ◆Material: PA6 Nylon ◆Size: 14" x 8" x 4"(LxWxH) ◆Motor power: 450 W ◆Battery voltage/capacity: 20 V/4.0 Ah Lithium-Ion ◆Bit Type Accepts: SDS-PLUS ◆Charger voltage: 110-240 V/50-60 Hz ◆Impact rate: 0-4260 /min ◆No-load speed: 960 r /min ◆Charging Time: 2 Hours ◆Maximum drill diameter of concrete: 1"(26 mm) ◆Maximum drill diameter of wood: 1-3/16''(30 mm) ◆Maximum drill diameter of steel: 1/2"(13 mm) ◆Net Weight: 11 lbs ◆Package includes: 1 x SDS-Plus rotary hammer 1 x Auxiliary handle 1 x Depth gauge 3 x Drill bit (6/8/10 mm) 1 x Battery 1 x Charger 1 x Carry case