This is the Gear Series of planet sculpting tools.
The Gear Walls sculpts Gear themed hills.
The Gear Craters sculpts Gear themed craters.
The Gear Rivers sculpts Gear themed rivers.
The Gear Canyons sculpts Gear themed canyons.
The Gear Plateaus sculpts Gear themed plateaus.
The Gear Mesas sculpts Gear themed mesas.
The Gear Mountains sculpts Gear themed mountains.
The Gear Fissure sculpts Gear themed lava flows.
The Gear Seas sculpts Gear themed seas.
These are found the same way as artifacts: by visiting a planet with yellow radar waves coming out of it, using the radar to locate the item, and then using your Abduction Beam to acquire it. They have the same appearance as terracoloring tools, so you can't be sure what you will get.