Machining if the hole in the handle is too close to the edge for my liking. However, the metal it is made of is built to withstand harsh environments. So I suspect it won't wear out in my lifetime. I received an instruction page in my box. The assembly took 5 minutes. I checked it. This will suit my needs well. (binding paper). If I needed grommets that would stand up to the weather, I would buy stainless steel grommets. The included sockets appear to be made of aluminum. Magnetic stamps would be a bonus. Update: I was surprised how difficult it was to work with paper. Downgrading due to difficulty in using it. First I had to punch holes in the paper in sets of 10 (because it can't hold more than 10 and the core isn't big enough to hold more than 10 sheets). At the same time, it was tiring to keep the papers from moving when the lever was lowered. 14 eyelets finished, 48 more to do.