Progrex combines technology, economy and eco-friendliness in the same mechanical pencil. With its sliding metal sleeve, ergonomic grip and integrated eraser, Progrex is the ultimate accessory! High-strength leads resist the chance of breaking and are perfect for everyday use in the home, workplace or school. Made of 70% recycled materials reclaimed from manufacturing. All Pilot BeGreen percentages are calculated excluding replaceable parts such as refills, cartridges and leads. 0.5mm tip. Refillable with Pilot ENO-G pencil lead refills.