anyone know how wide they are.i need to know please help
The ones that I have that came with my G5 (the four colored ones, reminds me of that simon game) are 1.40 inches (diameter) exactly. hope that I have helped. They fit but just barely on the skyline that I had.
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what is that in fractions if you can find that out please tell me
I think the fraction would be 1 4/10 or 1 2/5. 
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The Big Cat is right. Sorry my fuler only measures in 10ths of an inch. Not an ordinary ruler.
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o its fine i was just wondering
would they fit on an 888
yes
They do fit, but I put them on mine and it made it vibe super bad. And they were on tight. It might just be my throw tho