Avengers: Age of Ultron actor Robert Downey Jr. gives a young fan in need a 3D-printed Iron Man arm so that he can be a superhero too.

Alex is a massive fan of Marvel’s superhero movies, and an even bigger fan of riding his bike. He was born with a partially developed right arm, so Iron Man actor Robert Downey Jr. worked with The Collective Project to give him a 3D-printed arm to help him become a superhero in his own right. Watch the touching video below:

Alber Manero, a college student who builds and donates low-cost, 3D-printed bionic limbs to kids around the world decided Alex deserved a unique prosthetic. He teamed up with Iron Man actor RDJ, and they surprised Alex with his own Iron Man hand.

Prosthetics are often incredibly expensive, and even with insurance, they’re sometimes not obtainable by young children who are constantly growing. This arm cost just $350 dollars to make, as noted by Microsoft’s The Collective Project, which is focusing on shining a light on students, like Alber Manero, who are making positive changes using technology.

A normal prosthetic arm or leg costs up to $40,000, an amount which no family in need should have to come up with. Robert Downey Jr. gives Alex a great show, as he tells him his arm is actually better than his movie one, since his light was malfunctioning during the visit.

This isn’t the first time we’ve seen some of Marvel’s superhero actors using their popularity for good, as just last week we saw Chris Evans head over to Seattle Children’s hospital dressed as Captain America to cheer up children with cancer. Chris Pratt tagged along and handed out Star-Lord action figures.

Alex doesn’t miss a beat in this video though when meeting one of his favorite superheroes, and knows exactly who he’s talking with. It’s a beautiful thing to see a kid like Alex able to use his arm again with the use of a couple hundred dollars in materials.

Learn more about The Collective Project by going to the official website. Also, be sure to read more about Alber Manero, the college student responsible for creating the arm featured in the video.