BLACK&DECKER Hammer Drill Features:

-New 710W AC motor design delivers improved power & torque performance for all DIY tasks
-Metal GEAR case gives increased stability and therefore improves durability and tool life
-A secondary handle to provide additional control and lock on button for greater comfort
-Standard accessories chuck key auxiliary handle carrying kit
-Voltage 230 V power 710 w chuck 13mm keyless beats per minute 52700 bpm no load speed 0-3100 rpm/td> -max torque 16 mm max diameter wood 32 mm max diameter masonry 16 mm max diameter Steel

Black & Decker, Hammer Drill  Features:

• The BLACK&DECKER Hammer Drill 800W, 24mm SDS plus 220 Volt advantages are the best for drilling concrete, wood, metal, and others. 
• It has a reverse function for screwing applications, an additional handle, and a rubber grip making it comfortable and fatigue-free.
• It has a pneumatic hammer with Power Impacts per minute is 0-5180.
• Variable speed provides more variety and control.
• A guideline is supplied for depth guidance

DEWALT Combination Hammer Features:

• The SDS plus hammer drill is Ideal for heavy-duty operations that need fast and effective drilling, Varying speeds and a trigger switch are accessible. 
• The brushed motors provide power up to 1000W for peak performance,
  with a no-load speed of 820 rpm and 4.2J impact energy.
• Rotation stop mode for light carving in plaster, tiles, soft masonry, and light concrete.
• Impact-stop mode for rotary only drilling in wood and metal.
• An anti-rotation system senses a loss of tool control, it immediately cuts power, for increased safety.
• Active vibration control system (8.2m/s2) with a floating rear handle to improve safety, comfort, productivity, and reduce fatigue.
• 3 Quick jaw change tools up speed, precision, and flexibility when drilling in steel, ceramic, and wood.
• The large hammer mechanism construction ensures extended tool life and excellent performance.
• Electronic changing speed switch for perfect control.
• high-speed drilling performance for drilling large anchors, fastening and through holes in concrete and masonry with diameters ranging from 6 to 32 mm.