Alun,

[Mr Jack Martin]

Alun,

Found this on Robot shop is it suitable ?

https://www.robotshop.com/uk/makeblock-1m-open-end-timing-belt.html?gclid=EAIaIQobChMIk8H1oLuA2gIVzbXtCh2oZgh0EAQYBCABEgIlgfD_BwE

Regards,

Jack

Essex UK