How To Change The Refill of Ballpoint Pen and Pencil

STEP 1
To exchange the refill, screw off the metal part of the pen top to pull out the spring and the used refill.
STEP 2
Put in a new refill and the sprig and screw back the pen top.
Here is a link for the TRC Ballpoint Pen Refill
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STEP 1
To exchange the pencil refill, pull out the pencil you finished using. Then, inset the new pencil.
STEP 2
To exchange the eraser refill, pull out the eraser you finished using. Then, inset the new eraser refill.
STEP 3
If you cannot pull out the eraser because of too short, push out it with a thin rod.
Here is a link for the TRC Pencil Refill with three pencils and two erasers.