This is a very small solderless breadboard with 170 tie points. This breadboard fits nicely on the Arduino Proto Shield Kit and the Arduino MegaShield Kit (use two of these for the MegaShield).
This breadboard has a strong self-adhesive backing.
Dimensions: 1.8" × 1.4"
This mini solderless breadboard is available also in white and in blue. The blue version has interlocking tabs/notches.