Got three aluminium rear sprockets that came with one of my bikes & just discovered that they do not fit
So, may be of use to someone else out there:
They are all 126 mm hub ID & are all matching 6 studs pattern
1. Cant see the brand on it - 44 520
2. Renthal 123 520 48T
3. ERGAL Corona 51 0808
$20 each or $50 for the lot. PM me if you want pics