Pocket Cutter SC-9558
https://safecutters.com/pocket-cutter-sc-9558/
The Pocket Cutter (SC-9558) is one of the most advanced disposable cutting tools on the market, features automatic blade retracting technology where blade retracts into the head of the knife once it loses contact with the cutting surface. Cuts shrink wrap, nylon, plastic straps, cardboard and film. Good for 1000s of cuts. Designed for either right or left hand use.