What is the difference between disposable and refillable ball point pens?
Disposable pens are typically made with plastic parts. Refillable pens, on the other hand, can convey a more elegant impression as they are usually made of metal and are often more expensive. Remember, sometimes the saying is true: You get what you pay for. Manufacturers may substitute plastic for metal parts inside the barrel, which keeps costs down but can also shorten the life of the pen. Pen ink refills replace the entire ink cartridge down to the ball point. Refillable pens normally twist open from the middle of the barrel so that the old ink cartridge can be removed and the new one inserted.
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