Gear Set For Economy Gearbox, 2 set (8 gear total)
Polythene gears are available with an adapted centre to provide a tight press-fit onto gearboxes.
The 22mm (20 teeth), 32mm (30 teeth) and 40mm (40 teeth) each have the modified centre.
The 15mm (12 teeth) gear is unchanged and is a press-fit onto a 2mm shaft.
2 gears of each kind, 8 gears in total