These crosses are not standard in design.  Some are the classic looking cross with metal to make a clean and simple look.  Some are modern looking design with simple lines and standout features.  Or we could get into something totally different, always your choice.  These crosses are 13" (330 mm) high with 10" (250 mm) long arms.

These crosses tend to be on the more custom side but I can duplicate what you see. So let's discuss your desires in the Design Your Own link. (Cross size can be changed too, at a slightly higher price.)