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2. Hammer drill - Wikipedia

   en.wikipedia.org/wiki/Hammer_drill

   A corded hammer drill next to a drill bit and a chuck key. A hammer drill, also known as a percussion drill or impact drill, is a power tool used chiefly for drilling in hard materials. [1] [2] It is a type of rotary drill with an impact mechanism that generates a hammering motion.

3. Thor Power Tool Company - Wikipedia

   en.wikipedia.org/wiki/Thor_Power_Tool_Company

   Its first product was the "Thor" pneumatic hammer to pound rivets and drill holes for bolts used to fasten the fire box of a locomotive to its boiler. The name "Thor" referred to: Thor , the mythical god of thunder, frequently pictured as wielding a mighty hammer.

4. Rotary hammer - Wikipedia

   en.wikipedia.org/wiki/Rotary_hammer

   Modern units allow the hammer and rotation functions to be used separately or in combination, i.e., hammer mode, drill mode, or both. When used in the hammer mode, the tool provides a drilling function similar to a jackhammer. [4] Rotary hammer drills have an oil filled gearbox, which allows them to operate durably despite the large forces and ...

5. Impact driver - Wikipedia

   en.wikipedia.org/wiki/Impact_driver

   A manual impact driver (for use with hammer) with screwdriver bits and adapters. An impact driver is a tool that delivers a strong, sudden rotational force and forward thrust. The force can be delivered either by striking with a hammer in the case of manual impact drivers, or mechanically in the case of powered impact drivers.

6. 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 ]

7. Video shows arrest of Olympian Fred Kerley after ...

   www.aol.com/news/video-shows-arrest-olympian...

   One officer "delivered multiple hammer fists" toward Kerley's head and elbows, according to the police report. "Stop resisting!" one officer said to Kerley as he laid on the ground, according to ...