It's the Nokia DT-22 Tripod Adapter and basically adds the much needed standard tripod mount to the bottom of the N93. This adapter can fit on your standard tripod in addition to the neat little Nokia tripod.
If you've got an N93 and shoot video, you need this tripod. The legs extend too. One cool thing you can do is use the tripod to hold the camera out at arms length when shooting either a still photo or video of yourself.
I also used the adapter to attach a Bogen - Manfrotto RC2 Compact Rapid Connect Mounting Plate 3157N to the N93 so that I could attach it to my Bogen tripod. See the pic.
