Recently I've been spending quite a lot of time with these lovely writing tools. I originally found them while on study leave in Japan and went on-line to have a look at them in more detail.

The Blackwing 602 features a very smooth and firm graphite inner. It comes in a gunmetal grey finish and also features the iconic square black eraser on the end. These erasers are replaceable. The pencils themselves last quite a long time.

These (slightly) expensive pencils come in packs of twelve and are highly recommended.