Researchers at Harvard have created a new robot that’s the smallest, fastest, and most precise of its kind. It’s called the milliDelta, and can move so quickly — up to 75 motions a second — that on camera it’s just a blur. The bot could be put to a range of uses, says its creators, from working in assembly lines for making tiny circuitboards to assisting in delicate microsurgeries.

The milliDelta is an extreme example of what’s usually called a “delta robot.” This is a design of robot that was invented in the 1980s, and is usually found in factories doing “pick and place” work. This is exactly what it sounds like, and involves selecting items off a conveyor belt and slotting them into place. The first ever delta robot was actually built to work in a chocolate factory, and placed pralines into their packaging. via The Verge