TTX76R roller pen 1, excellent quality 2, factory price 3, OEM & ODM available ... cm 7). Material: Copper 8). Function: normal writing, imported pen lead with nib 0.5mm, cartridge is durable for 2 years without ... phone or I pad, wooden pens, bamboo pens, carbon fiber pen, leather pens, Ceramic pens, plastic pens and a variety of ...