To start I took a star away because of the nylon/plastic knob that locks and opens the swivel. That just doesn't cut it for me for the price. They aren't cheap but are extremely heavy duty. MIM isn't a bad thing in my opinion and I needed a 1 1/4 sling loop swivel for a shotgun which are notoriously heavy.
These are much thicker than the original QD sling swivels. The military M14 style metal sling clamp will not fit around these. Just had to remove clamp and loop sling through.