BD toe bails fit 75mm tele boots (very few other makes do), NTN boots and ski M boots. Might not fit downhill/piste boots, but then I guess that's not what you want?
In reply to top cat: Its actually for a co-worker, I am selling the crampons. He has some Salomon Mission RS 10, I have no clue about ski boots. And the problem is he is 300km away so he cant come round for a test...