ESD-R-57A-1,MN-ZN TOROIDAL, WITH CASE AND TA
ESD-R-57D,NI-ZN TOROIDAL, BARE 36MM
ESD-R-57D-1,FERRITE CORE SOLID 32.4MM
ESD-R-57M-H,MN-ZN FERRITE TROIDS CASED 33.2M
ESD-R-57N-H,NI-ZN FERRITE TROIDS CASED 33.2M
ESD-R-57-P,MN-ZN TOROIDAL, COATED 34MM
ESD-R-57S,MN-ZN TOROIDAL, BARE 36MM
ESD-R-57SR,MN-ZN FERRITE HIGH Z TROIDS/RING