Replacement heel clip for all current models of Black Diamond step-in (Pro and Clip) crampons.
They come in Left (BD04010700LTALLS) and Right (BD04010700RTALLS) versions though actually the only difference is the way that the strap is threaded and this could easily be turned round.
The strap supplied is long enough to fit semi step-in (Clip) crampons and can be cut short and heat sealed for full step-in (Pro) crampns.
The price is per single lever.