The United States Postal Service has revealed the all-new series of Star Wars postage stamps and they are featuring the droids of the franchise.

Representing more than four decades of innovation and storytelling, the droids featured in this pane of 20 stamps are IG-11, R2-D2, K-2SO, D-O, L3-37, BB-8, C-3PO, a GNK (or Gonk) power droid, 2-1B surgical droid and C1-10P, commonly known as “Chopper.”

The USPS chose these droids as a bow to the work that Lucasfilm and Disney are doing to help support STEM education initiatives across the United States.

These set of droids are a nod to Lucasfilm’s, as well as its parent company, Disney’s, commitment to science, technology, engineering, and math (STEM) learning and the continued collaboration between “Star Wars: Force for Change” and global pre-K-12 nonprofit organization “FIRST” (For Inspiration and Recognition of Science and Technology). “Star Wars: Force for Change” and “FIRST” have joined forces to expand access to STEM learning to more young people around the world, and to help them envision a brighter, more inclusive future.

These stamps will be available in Spring 2021.