About TorelcoSince 1962 the industry has known Torelco as a partner that supplies toroids of superior quality, shipped to you with flawless adhesion to delivery schedules. Toroids from .093 inside diameter to 15 inches outside diameter can be wound using wire sizes from 8 AWG through 46 AWG in open or cased styles, varnish or epoxy encapsulated.Torelco is equipped to fill your requirements for bobbin wound devices with the same attention to quality and service that the industry has come to expect from our toroid line. Please give Torelco the opportunity to quote on E-1 laminated, ferrite core and all other styles of custom bobbin wound magnetic devices.