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Cooling rods are tubular objects specifically designed for Scorpius' coolant suit by the Diagnosan Tocot. Initially they were much longer, and housed in a backpack in the original and much cruder design of the coolant suit. It appears that Scorpius has gotten Peacekeeper engineers to perfect the technology, making the rods much smaller so they can placed directly into his brain, increasing effectiveness.

Cooling rods appear neon blue when fresh and neon red when spent.