First there's a scalpel blade that nests inside one end of the tube. To use it, users simply unscrew it, flip it around, and screw it back in to turn the Mantis into its own version of an X-ACTO ...

It supports a range of scalpel blades, including No.10, No.11A, No.11, No.15c, and No.15, giving you the flexibility to choose the right blade for the task at hand.

Watch the demonstration video below to learn more about the unique scalpel blade multitool designs. Puna Knife by 3COIL – The “Puna” is a knife designed for the modern world.

Described by the company as "ultra-tiny," the folding NTK05 knife is keychain-ready, and features a commonly-used scalpel blade for easy replacement when wear and tear takes hold.

Under the microscope you could see the obsidian scalpel had divided individual cells in half, and next to it the steel scalpel incision looked like it had been made by a chainsaw Dr Lee Green ...

When you consider that most household razor blades are 300 to 600 angstroms, obsidian can still cut it with the sharpest materials nanotechnology can produce. The worms that invade your brain Even ...