protection is excellent - that only these glasses have not flown in 8 years . Sawing, jointing, tape machines, manual milling machines, circulars, jointers, etc .; for metal - a grinder, lathes and milling machines . A gasoline scythe, a reciprocating saw, bush trimmers . Eyes and eyebrows are intact (I received a couple of times from a grinder and gasoline scythes "on the forehead" - I'm starting to think about a protective shield during such work. .)