Lada Niva / 2101-2107 Double Sided Crankshaft Wrench 36mm / 38mm
One side is for the 36mm crankshaft nut, other side is for the 38mm crankshaft nut.
It's the best solution, when you don't know which Crankshaft Nut you have.
So this key will work for any Lada.