Fair-Rite 5952020601 CORE TRANSFORMER, 52 TOROID, 53.3MM; Core Type:Toroid; Core Size:21.7mm x 13.5mm x 6.35mm; Core Material Grade:52; For Use With:Power Input Filters, Ground-Fault Interrupters, Common-Mode filters , Pulse & Broadband Transformers EUR 6.65 1