... .wide ranges of size are supplied :EI28,EI30,EI35,EI38.4 ,EI38.4 ,EI41,EI42 ,EI48 ,EI50 ,EI54 ,EI57 ,EI60 ,EI66 ... ,EI75EI76.2,EI78,EI84,EI85.4,EI96,EI105,EI108,EI114 ,EI120,EI132,EI133.2,EI144,EI150 ... ,EI152.4,EI162,EI168 EI171 ,EI174,EI180,EI192, EI210 ,EI2404. ... ,M50W6005.Widely used in the Transformer Core CRGO I steel lamination