100cc piaggio diesis/derbi atlantis roller weights

Hi I can anybody tell me what size roller weights I need for a piaggio diesis 100 , the engine is the same as used in a derbi Atlantis 100cc
Any help would be great
Cheers

 

i think 7g is standard not 100% tho, where can i get some from i have looked everywhere and im struggling to find 1s that fit

 

there 17mm x 12mm not sure on the weights and adranalin pedstop stock rollers in that size by polini