I think I know what you are talking about, but I went looking thru all my catalogs yesterday morning and could not find them.
What is in my brain is not so much a bridge clip, per se, but I seem to recall it was some kind of fuse or sneak current protector or something like that - if I remember the usage right they made a 110 block into some kind of glorified 66 block. The signal came in on row 1, and went out on row 2, and there was this little off-white fusey thing that snapped on the pair on row 1 and across to row 2 - it was designed for OPX or something where the lines needed to be fused.
Like I said though - I know it was in catalogs 10-odd years ago, but can't find it now.... It was either a lucent or siemens product. It probably went the way of those colored 110 snap-in plastic designation strips I like that are so cool and you can write on them with Sharpie... I can't find those anymore either....