SWTOR Mouse Wheel

My question is pretty simple, so hopefully someone can help me. I have the SWTOR Gaming Mouse and the little nub broke off of the scroll wheel so it no longer scrolls. I have check the internet and cannot find anyone who is selling that particular part. I have found plenty of scroll wheels for other Razer mice, however. Does anyone know another Razer mouse that uses the same size scroll wheel that I could purchase to make the swap? I took a measurement of the wheel that is in the mouse, and it is about 1” in diameter and just under that across the axel (which is broken, so presumably about 1” or slightly longer when whole).