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2. Yankee screwdriver - Wikipedia

   en.wikipedia.org/wiki/Yankee_screwdriver

   Drill points for the smallest 133/135 size screwdriver; ... extra-long screwdriver tips for special applications. ... (263mm) long Both take the same bits as 135 e.g ...

3. Drill bit sizes - Wikipedia

   en.wikipedia.org/wiki/Drill_bit_sizes

   Fractional drill bit set by Craftsman. Fractional-inch drill bit sizes are still in common use in the United States and in any factory (around the globe) that makes inch-sized products for the U.S. market. ANSI B94.11M-1979 sets size standards for jobber-length straight-shank twist drill bits from 1/64 inch through 1 inch in 1/64 inch increments.

4. Drill bit - Wikipedia

   en.wikipedia.org/wiki/Drill_bit

   The diameter-to-length ratio of the drill bit is usually between 1:1 and 1:10. Much higher ratios are possible (e.g., "aircraft-length" twist bits, pressured-oil gun drill bits, etc.), but the higher the ratio, the greater the technical challenge of producing good work.

5. Watts Brothers Tool Works - Wikipedia

   en.wikipedia.org/wiki/Watts_Brothers_Tool_Works

   Watts Brothers Tool Works is a tool manufacturer located in Wilmerding, Pennsylvania.They are known for manufacturing drill bits that can drill square holes, [1] [2] including blind holes, which cannot be made with other methods such as broaching.

6. All of these Black Friday deals would make very good gifts - AOL

   www.aol.com/lifestyle/all-of-these-black-friday...

   "I was a bit careless and forgot the watch in my pants when I was doing laundry. Luckily, after a 40-minute wash and a 50-minute dry on high heat, the watch worked perfectly fine." $149 at Amazon

7. List of screw drives - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_drives

   Slot screw drives have a single horizontal indentation (the slot) in the fastener head and is driven by a "common blade" or flat-bladed screwdriver.This form was the first type of screw drive to be developed, and, for centuries, it was the simplest and cheapest to make because it can just be sawed or filed.