AIR CORE INDUCTORS AWG 25 - AWG 21 Specifications: Conductor: 99.99% Oxygen-free Copper. Insulation: Type V Enamel. Bobbin material: ABS Dimensional stability: 85C. Inductance values tested at 1KHz / 25C Inductance tolerance: +/- 5%. Connecting leads: 100mm (last 10mm tinned)