Not much to say about the collar. But if you are looking for a quality, large, strong, durable, well-made clip that is designed to be a SERIOUS clip, then this is the one for you. There is nothing supernatural in it.
I work heavy equipment repair and have 2 more clips from Harbor Freight. Rolled both the 3rd and 4th time I've used them. Bought it as a replacement and it works great. Just as good as the more expensive clips I've used. Worth more than their wishes.
This clip is fantastic. It's stronger and feels better and heavier than what you get at Harbor Freight. The screw needed some lubrication to make it turn easily. The clamp is not too wide so it easily fits into tighter spaces. I will definitely buy more from this series if I need more.