Pencil assembly

A pencil assembly comprising:

• a main shank extending along a first longitudinal axis, the main shank comprising a separate single first writing shaft positioned within the main shank substantially along the entire length of the first longitudinal axis, and first and second ends, the single first writing shaft secured to inner wall surfaces of the main shank along the length of the first longitudinal axis;
• a fixing annular member immovably secured to the second end of the main shank, the fixing annular member including a first locking stub extending outwardly along the first longitudinal axis away from the main shank along the first longitudinal axis, the locking stub comprising male threads;
• a connecting shank extending along a second longitudinal axis, the connecting shank comprising a separate single second writing shaft positioned within the connecting shank substantially along the entire length of the longitudinal axis, and third and fourth ends between second longitudinal axis, the single second writing shaft secured to inner wall surfaces of the connecting shank along the length of the second longitudinal axis;
• and
• a fixing collar immovably secured to the third end of the connecting shank, the fixing collar including a locking hole at an open end thereof and positioned along the second longitudinal axis, the locking hole comprising female threads that are detachably secured on the male threads of the locking stub, such that the main shank and the connecting shank can be threadably attached to one another along the respective first and second axes.