Shift knob size???

I just Purchased a n97 Nissan Altima GXE umm yesterday, i havent gotten the car to my house yet but i alrdy know everything i wanna do to it and i was lookin for a different shift knob for it but im not sure what the bolt size is on it...bcuz the Greddy Wieghted shift knob will fit a 10mm bolt patern...What is the bolt size on that car??? anyone who can help, it will be apreciated