We've had some 70/30 tungsten copper rods collecting dust in the shop for about two years with no real plan until a customer inquired about making a heavier pen than our standard catalog offerings. The material is roughly three times as dense as titanium and, to make the most of it, we went with the Thick Bolt Action model. The tip, body, and top are all tungsten copper, which puts the Standard length at about 4.3oz, nearly double our Copper Bolt Action Standard. It's a pen you'll notice in your hand and pocket. We only made a handful for this first batch so let us know what you think and maybe we'll make more.