From the minds who brought you the concrete sketch pencil comes the implement you've been needing to flesh out your concrete collection: a concrete ballpoint pen.

Much like its pencil counterpart, the concrete roller ball pen has a number of sharp ridges intended to erode and fit your grip with everyday use. The end result isn't just a concrete pen (cool) but a concrete pen that is uniquely yours (cooler). It costs a little more than your average Bic at a $70, but it's got style on its side. You can pick one up at the 22 Design Studio website. [22 Design Studio via MoCo Loco]