I ordered the PETZ FakirL bag for my Hillsound Pro crampons since Hillsound makes a bag for their microspikes only. These are larger than typical microspikes but I found they fit in this case along with an adjustment allen wrench and alpine strap locks. Mind you, there is no additional room, nut they do contain these items as if a custom fit. I cannot speak to the durability as of yet, but when the crampons are fit spike-to-spike, there seems to be no way a puncture can occur since they are held together tightly by the case.
This review was written in the old system and had content requirements that are different than reviews written today.