Great Product, very well made, and easy to set up and get up and running. After reciving the laser machine, we engraved some pictures in the supplied card sized aluminum plates and did our company logo on some brass pieces and they really look good. It pretty much marks everything we machine except white plastics. It will mark anodized aluminum, stainless steels, PEEK, Ultem, Polycarb with ease. Beautiful marking and easy to use. Can't beat the price. Reliable seller. No worries here!