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2. Drill bit shank - Wikipedia

   en.wikipedia.org/wiki/Drill_bit_shank

   SDS-plus is the most common by count of tools manufactured, with masonry drills from 4 mm diameter to 30 mm (and from 5/32" to 1-1/4") diameter ordinarily available. The shortest SDS-plus masonry drill bits are about 110 mm overall length, and the longest 1500 mm. SDS-max is more common for larger rotary hammers and chipping guns, and common ...

3. Rotary hammer - Wikipedia

   en.wikipedia.org/wiki/Rotary_hammer

   A rotary hammer drill used in construction. Rotary hammers can be used for "doweling" (repetitive drilling of large rebar anchor holes), and drilling through-holes in concrete and masonry walls. The hammering action helps break up the masonry so that it can be removed by the drill bit's flutes. Apart from their main function of drilling ...

4. Drill bit - Wikipedia

   en.wikipedia.org/wiki/Drill_bit

   Twist drill bits are available in standard lengths, referred to as Stub-length or Screw-Machine-length (short), the extremely common Jobber-length (medium), and Taper-length or Long-Series (long). Most drill bits for consumer use have straight shanks. For heavy duty drilling in industry, bits with tapered shanks are sometimes used. Other types ...

5. Hammer drill - Wikipedia

   en.wikipedia.org/wiki/Hammer_drill

   They are also used to drill holes in concrete footings to pin concrete wall forms and to drill holes in concrete floors to pin wall framing. Slotted drive shaft or slotted drive system (SDS) rotary drills are more commonly used as dedicated masonry drilling tools in construction.

6. NYT ‘Connections’ Hints and Answers Today, Friday, January 10

   www.aol.com/nyt-connections-hints-answers-today...

   Plus, I'll reveal the answers further down. Related: The 26 Funniest NYT Connections Game Memes You'll Appreciate if You Do This Daily Word Puzzle Hints About Today's NYT Connections Categories on ...

7. She hoped to learn more about her enslaved ancestors. A trip ...

   www.aol.com/she-hoped-learn-more-her-170337180.html

   A family photo of Myra Mills, the great-great-grandmother of retired Boston University professor Michelle Johnson, who traveled to South Carolina and North Carolina to research her family history.