This pen uses a 2.0mm lead core and the back cover also has the function of sharpening the lead. The sturdy and solid brass body provides good balance and stability. This is a beautiful drawing pen and a reliable tool for work and creation. The products are produced in Taiwan, combining Taiwanese design and traditional industrial technology, and telling Taiwan's local life culture. The boxwood box contains the product concept manual and has information on the type of consumables that can be replaced. specification Material: brass, sycamore wooden box packaging (with sandpaper) Product size: 11x11x157 mm Wooden box size: 77x31x190 mm Applicable lead: 2.0 mm Use and maintenance: The exposed copper series is made of brass and is treated with a special black paint on the surface of the product to give a calm and understated texture. According to your preference, you can use the fine sandpaper in the box to clean the surface of the product, revealing the golden brass to create the copper effect. Create a style of stationery that is unique and belongs to you. Shipping instructions: After payment, the goods are shipped from stock to delivery for 3 working days. (excluding holidays) The home delivery staff may contact you before delivery, so please keep your mobile phone or local calls open. After the Super-commercial goods are delivered to the designated outlets, you will be sent a SMS and email to inform you.