What better way to stay single by carrying your very own little companion cube with you! 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." You know what else is also 4" end to end? Oh...wait. Nevermind. Anywho, it's currently sold out, but I'm sure you can find it somewhere in eBay or whatever. Click pic.