This plate tectonics keychain depicts the three principal types of boundaries between the Earth’s tectonic plates: A convergent boundary (subduction zone), a divergent boundary (mid-ocean ridge), and a transform boundary (fault). Other geological phenomena are also portrayed, such as the hotspot volcano and batholiths. Flip the keychain over and you can see more detail, such as the disintegration of the subducting plate, and the rising magma beneath the mountain range. Great for geologists, geology students, and geology nerds! Dimensions (not including Keyring): 5.0 cm long X 2.4 cm wide X 1.5 cm high Weight: 26.0 Grams