Ok thank you, I have found them on paragear.com and that is exactly the piece I was describing.
How would I know what size rapid links I have? There are some slider bumpers for size 3.5, and some for size 4-5. I have a 170 main if that gives you an idea of the size container etc.
Also, would installing new ones be self explanatory or should I have a rigger assist me with them?