Forums Bindings another Dynafit question Re: ski crampon follow up May 11, 2006 at 10:38 pm #584448 skinjob 52 Posts Just a follow up on the B&D Engineering 135 mm ski crampons for Dynafit…I ordered a set, and they came quickly in the mail. Slapped em on and did some skinnning locally, they work great. They significantly improve climbing efficiency on steep pitches. I think one expends less energy preventing the board from slipping backwards, and that extra energy is used to propel one’s self forward. A good product. Can’t wait to try em out on something icy and exposed, next winter.