Alexey Pelevinwrote a review of Grivel G12 Crampon on June 21, 2018
Familiarity: I've put it through the wringer
I bought a G12 for Zamberlan 39 EU. The fastenings in the nose and back were wider than the boot. But the problem is solved, if you tighten the clamp tightly behind, it helps fix the crampon, and the shoe stops hanging to the right - to the left.