Magnetic Shield Corp. supplies tape-wound MuMETAL® Toroidal Cores to industries requiring High Metering Accuracy (HMA) current transformer cores. We offer wound cores with a range of inside and outside diameters using MuMETAL® foil thicknesses. Ask our engineering department for exacting specifications of our high permeability (µ) 80% nickel-iron MuMETAL® Cores. Our technical expertise and drawing review input can help expedite your design process.