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2. Jackhammer - Wikipedia

   en.wikipedia.org/wiki/Jackhammer

   A jackhammer (pneumatic drill or demolition hammer in British English) is a pneumatic or electro-mechanical tool that combines a hammer directly with a chisel. It was invented by William McReavy, who then sold the patent to Charles Brady King. [1] Hand-held jackhammers are generally powered by compressed air, but some are also powered by ...

3. Rotary hammer - Wikipedia

   en.wikipedia.org/wiki/Rotary_hammer

   A rotary hammer, also called rotary hammer drill [1] is a power tool that can perform heavy-duty tasks such as drilling and chiseling hard materials. [2] It is similar to a hammer drill in that it also pounds the drill bit in and out while it is spinning.

4. Hammer drill - Wikipedia

   en.wikipedia.org/wiki/Hammer_drill

   Hammer drills have a cam-action or percussion hammering mechanism, in which two sets of toothed gears mechanically interact with each other to hammer while rotating the drill bit. With cam-action drills, the chuck has a mechanism whereby the entire chuck and bit move forward and backward on the axis of rotation.

5. Drill - Wikipedia

   en.wikipedia.org/wiki/Drill

   The hammer action may be engaged or disengaged as required. Drill press – larger power drill with a rigid holding frame, standalone mounted on a bench; A heavy duty rotary hammer drill. Rotary hammer combines a primary dedicated hammer mechanism with a separate rotation mechanism, and is used for more substantial material such as masonry or ...

6. Driving into Manhattan? That’ll cost you, as new congestion ...

   www.aol.com/driving-manhattan-ll-cost-congestion...

   New York’s new toll for drivers entering the center of Manhattan debuted Sunday, meaning many people will pay $9 to access the busiest part of the Big Apple during peak hours.

7. 10 Members of the Same Family Killed After Private Jet ... - AOL

   www.aol.com/lifestyle/10-members-same-family...

   Ten members of the same family have been killed after a private jet crashed minutes after taking off in southern Brazil on Sunday, Dec. 22. A statement released on the LinkedIn page of business ...