Securing castle nut for rear wheel bearing -

VESPA 

Ø=inner=40mm, 

Ø=outer=49mm, 

slots=9- 

Vespa Super 125 (VNC1T), Super 150 (VNB1T -153261), 

for front wheel bearing 

Vespa GS160 (VSB1T, VSB2T), SS180 (VSC1)

OEM numbers (for comparison purposes only)

Piaggio 2/110415, 110415, 58706

 Motovespa Vespa 150 GS (engine 04M)

 Motovespa Vespa 150 S (engine 2V01M)

 Motovespa Vespa 150 S (engine 502M)

 Motovespa Vespa 150 Sprint (engine 04M)

 Motovespa Vespa 160 (engine 09M)

 Vespa (Piaggio) Vespa 150 Super (A, VBC)

 Vespa (Piaggio) Vespa 125 Super (VNC1T)

 Vespa Augsburg Vespa 160 GS/4 (type 382, VSB1T)

 Vespa (Piaggio) Vespa 160 GS/4 (VSB1T, 1963, GS4)

 Vespa (Piaggio) Vespa 180 Super Sport (VSC1T, SS180)