Seat post clamp size for a virtuoso ?

[cyberknight]

Does anyone know what size seat post clamp i need to get for a virtuoso ?
The seat post is a standard size (27.2 mm? )

I managed to snap the bolt on mine probably due to overtightening repeatedly as i have been micro adjusting my saddle height .

 

[TheDoctor]

Probably 31.8 mm - that's standard for alloy IIRC.
Your local Halfords is bound to have the exact part though.

 

[cyberknight]

Probably 31.8 mm - that's standard for alloy IIRC.
Your local Halfords is bound to have the exact part though.

I measured it and i got 32 mm with a normal tape measure , so 31.8 sounds right, i checked the halfords site and they do stock a standard size but nothing specific.currently bunged on an old QR one i had in bits but i do not like them purely for security reasons.