www.safetyandhealthmagazine.com/articles/safety-blade-2

Safety blade

October 1, 2011
The Megasafe cutter is ergonomically designed and made with an aluminum handle that allows users to easily perform general-purpose cutting tasks. It features “smart knife technology,” allowing the blade to automatically retract when it loses contact with the material being cut. The blade will retract even if the user leaves the slider in the forward position.

Martor USA