Very well designed and made. Very useful for all conditions of using a good sling on a rifle. Easy and quick for attaching and removing the sling and adjusting it on the rifle. Can't think of any possible way of improving the design.

Update: 12/4/2012
Am downgrading my original rating on these from 5 stars due to a frustrating shortcoming I've discovered recently. Pressing the release pin knob to remove these, there is a sharp circle on the end of the pressing point that cut my finger while holding it and turning the pivot. There is a lot off pressure involved in keeping this pressed and you have to go through this to get the things on and off. I seriously don't understand why the sharp edges are designed into these but I now notice that all of these I own has them. Don't know why, after years of use this has not happened before. Just luck, I guess.

Am going to complain to the manufacturer about this because, in my opinion, this is a serious design/manufacturing flaw that should not be there.

I am now removing all of these that I own and am cutting the stupid sharp circle down flush with the center of the knob.
Very well designed and made. Very useful for all conditions of using a good sling on a rifle. Easy and quick for attaching and removing the sling and adjusting it on the rifle. Can't think of any possible way of improving the design. Update: 12/4/2012
Am downgrading my original rating on these from 5 stars due to a frustrating shortcoming I've discovered recently. Pressing the release pin knob to remove these, there is a sharp circle on the end of the pressing point that cut my finger while holding it and turning the pivot. There is a lot off pressure involved in keeping this pressed and you have to go through this to get the things on and off. I seriously don't understand why the sharp edges are designed into these but I now notice that all of these I own has them. Don't know why, after years of use this has not happened before. Just luck, I guess. Am going to complain to the manufacturer about this because, in my opinion, this is a serious design/manufacturing flaw that should not be there. I am now removing all of these that I own and am cutting the stupid sharp circle down flush with the center of the knob.