Cheap Made-In-China crap. If only product engineers would actually try using their creations in the real world, we'd be soooo much better off.The shackle is covered in a clear vinyl with square-shouldered ring seals at each end (see my photos). The HUGE problem is that these ring seals slide all over the place when you try to apply this lock. If you're a truck driver and looking for a weather proof trailer lock, THIS IS NOT IT!! Within 2 or 3 lock/unlock cycles you'll have lost at least one of the ring seals as they get pulled off when you slide the shackle through the eyes of the latch hasps on your trailer.Any engineer with half a brain would have captivated the seals within the main body housing instead of cheaping out an slipping them like washers onto the shackle.If you want to lock something long-term, this item may meet your needs, but if need to apply & remove this lock more than once a month, you're gonna want something way better.