I was looking for a replacement nut for my Squier Bullet Stratocaster, and bought this one. The width of the nut fits the slot in the guitar neck perfectly, but it is a little too long, so a little sanding is needed, if you don't want it to stick out.
The height of the nut was perfect in my case, and so were the slots for the strings.
So with this nut, replacing the nut was very easy.