Pentel mechanical pencil Super Hi-Polymer leads let you jot down crisp, clean messages that are easy to read. This lead refill works with most Pentel mechanical pencils and competitors for wide ...

In a time when more people spend more time in front of a computer than ever before, it's no wonder that the mechanical keyboard market has started to boom. While the slim scissor switch keyboards ...

It looks to be a long stick of lead like you might find in a mechanical pencil. If you were really observant, you might have also found something else hiding in the image. On the opposite side of ...

Although lead has been mined for 6000 years, lead processing skyrocketed in the 20th century. 1,8 A malleable and durable metal, lead was used to prevent fuel from burning too quickly and to ...