1high power 2trnasformer ferrite cores, 3 soft UU cores. 4 low loss C10.33mm-1Le277mmAe840mm2Ve240336mm3AL7700nH/N2W1150gUI93/76/30S/NP03160111Material :PC40 ,PC44.large size high power low loss ferrite core.Mn-Zn ferrite coreshigh power low lossEE/EC/ETD/EI/UU/UI/UYF/PM/SP/T soft ferrite cores UU