On the top of the pen, there is a ring. This ring is used to pass through strings and hooks for customizing purpose. Through this, one can make the pen function like a key holder clinging on a backpack. There are refills for this item, so please try using this for a long period of time, and enjoy the change it goes through.
On the top of the pen, there is a ring. This ring is used to pass through strings and hooks for customizing purpose. Through this, one can make the pen function like a key holder clinging on a backpack. There are refills for this item, so please try using this for a long period of time, and enjoy the change it goes through.