A month or so back, I ordered a Knurling Tool kit from Hemingway Kits. I was about to contact them to let them know that the parcel must be lost as orders from Arc Eurotrade sem to show up in the USA in a few days.
This morning, a parcel is on the front porch with this label.

The contents are here.

Not being that familiar with the U.K. definition of goods which are dangerous to ship by air, please let me know which of these pieces of steel is the offending bit so that I can isolate it and perhaps store it out of the shop. Is a Hazmat Suit necessary?
Best
Stan