grizzly knife grinder wheel size

[knifemaking01]

hey just wondering if anyone has a grizzly knife grinder and might be able to tell me if the top idler/tension wheel is either 2inches or 4inches in diameter

 

[oldwolf]

Mine measures at a tad under 4". Probably 4" at the crown.

 

[knifemaking01]

Mine measures at a tad under 4". Probably 4" at the crown.

thank mate, appreciate you checking that for me