A set of "Mechanical Pen Lead Refill in Cardboard Material Packaging" and "Empty Reusable Case"

Uni Refill.
Product Description:
■ Easy to refill the case
Simply peel the self seal one at a time and remove the sharp lead directly from the refill package to refill it into the case easily.
Refillable allows you to use it over and over again without throwing out the case.

■ Sustainable refill packaging made of cardboard material
Slim cardboard with a 0.2 inch (4 mm) thickness and a sharp core, and a design that utilizes the natural texture of cardboard material.
The seal to seal the core is also a paper material, so after use, you can use it as a resource waste (old paper or cardboard) to be collected and reused. This product is not only refillable but also the packaging material is environmentally friendly.

■ Large capacity for about 4 main units.
For those who consume a large number of sharp leads, this product is a large capacity of about 4 pieces. It has been in response to the growing demands in recent years.
Keep your refills at home so you can focus on your study without worrying about losing your sharp leads.
Please refill one at a time. Does not hold 1-4 amounts at a time.

Product Name: Mitsubishi Pencil Pencil Leads Uni Refill with Empty Case 0.5 mm HB H.ULSD5TK4HBC