21 teeth

Duplex| d: 16mm
Duplex| Dh: 52mm
Duplex| L: 30mm
Triplex| d: 16mm
Triplex| Dh: 52mm
Triplex| L: 40mm
Pitch | Via Dp: 63.91mm
Outside | Dia Do: 68.00mm
Bore | d: 12mm
Hub | Dh: 48mm
Hub | L: 28mm