ROFLMAO, okay Patty you are right. They are not fool proof. They are "it gives you enough time to notice and stop their evil snakey head chewing" leashes.
I made mine. I went to home depot, got the connectors and 12 to 18 inch thin chains and put them on. The brat coordinator here was the one who told me what to do. Before that, I had a BAG full of chewed leashes sewn back together that I took with me to do home visits and show potential owners the dangers, lol.