Made with geeky love from .100" thick reclaimed aluminum. It measures 1.25" x 1.25" (about 3cm x 3cm). The surface has a brushed finish that will wear over time. It's attached to a clip style key holder with a flexible metal cord. End to end it's almost 4".
Perfect for the Portal lover on your gift list, the little cubes make a great stocking stuffer. And you know what else does? Those sexy legs of yours. Ooo la la!
Thanks to Michael, who may or may not have a financial interest in the sale of these keychains.