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  2. Kegel exercise - Wikipedia

    en.wikipedia.org/wiki/Kegel_exercise

    Kegel exercises may have benefits in treating urinary incontinence in both men and women. [10] Kegel exercises may also increase sexual gratification, allowing women to complete pompoir and aiding men in reducing premature ejaculation. [5] The many actions performed by Kegel muscles include holding in urine and avoiding defecation.

  3. Tap and die - Wikipedia

    en.wikipedia.org/wiki/Tap_and_die

    where is the tap drill size, is the major diameter of the tap (e.g., 10 mm for a M10×1.5 tap), and pitch is the pitch of the thread (1.5 mm in the case of a standard M10 tap) and so the correct drill size is 8.5 mm. This works for both fine and coarse pitches, and also produces an approximate 75% thread.

  4. Drill bit - Wikipedia

    en.wikipedia.org/wiki/Drill_bit

    The correct tool to start a traditionally drilled hole (a hole drilled by a high-speed steel (HSS) twist drill bit) is a spotting drill bit (or a spot drill bit, as they are referenced in the U.S.). The included angle of the spotting drill bit should be the same as, or greater than, the conventional drill bit so that the drill bit will then ...

  5. List of drill and tap sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_drill_and_tap_sizes

    Below is a comprehensive drill and tap size chart for all drills and taps: Inch, imperial, and metric, up to 36.5 millimetres (1.44 in) in diameter. In manufactured parts, holes with female screw threads are often needed; they accept male screws to facilitate the building and fastening of a finished assembly.

  6. Labia stretching - Wikipedia

    en.wikipedia.org/wiki/Labia_stretching

    Labia stretching, also referred to as labia elongation or labia pulling, is the act of lengthening the labia minora (the inner lips of the female genitals) through manual manipulation (pulling) or physical equipment (such as weights). [1]

  7. There may be a huge sexual benefit to back dimples - AOL

    www.aol.com/lifestyle/2017-05-31-dimple-plastic...

    Dimples: Chances are, if you don't have them, you want them. Looking at the celebrities smiles of Miranda Kerr and Jennifer Garner, dimples seem to be a facial feature many wish they inherited.

  8. Down-the-hole drill - Wikipedia

    en.wikipedia.org/wiki/Down-The-Hole_Drill

    DTH drill tool operated with drilling mud (Drillstar MUDHammer) A down-the-hole drill, usually called DTH by most professionals, is basically a jackhammer screwed on the bottom of a drill string. The fast hammer action breaks hard rock into small cuttings and dust that are evacuated by a fluid (air, water or drilling mud). The DTH hammer is one ...

  9. Drilling - Wikipedia

    en.wikipedia.org/wiki/Drilling

    The hammering action can be performed from outside the hole (top-hammer drill) or within the hole (down-the-hole drill, DTH). Drills used for horizontal drilling are called drifter drills . In rare cases, specially-shaped bits are used to cut holes of non-circular cross-section; a square cross-section is possible.