History
Doctor Doom developed these projectiles to snuff out fire-based superpowered enemies such as the Human Torch. The rockets were filled in with special chemicals to extinguish even artificial blazes, temporarily preventing the Torch from using his powers. The projectiles were trackers, so that Doom did not even have to aim at the enemy. They were shot from hidden compartments in the knuckles of Doom's gauntlets. Doctor Doom used these items once to defeat the Torch without harming him so that he could negotiate with the Fantastic Four.[1]
Notes
Unnamed in its comic-book appearance Fantastic Four #318. They seem to be different enough from Doom's Fingertip Darts to be considered a separate item.