ITEM NAME:5set PC40 EE25 5+5pins Ferrite Cores bobbin, transformer core, inductor coil M&O 5set NEW EE25 5+5pins Ferrite Cores AL=1950 ±25% Bobbin size:please check the 4th picture Core size(mm): (as picture) A:25.0 ±0.4 B:10.0 ±0.2 C:6.5 ±0.3 D:6.3 ±0.3 E:18.5min F:7.0 ±0.3 C1: 1.28mm^-1 Le: 49.5mm Ae: 38.4mm^2 Ve: 2131mm^3 5SET =10 ferrite halves + 5 bobbin.5set NEW EE25 5+5pins Ferrite Cores. 5SET =10 ferrite halves + 5 bobbin. Core size(mm): (as picture). C1: 1.28mm^-1. Le: 49.5mm. Ae: 38.4mm^2. AL=1950 ±25%.