We use the Polyethylene foamed sheet to protect the ferrite cores and bobbins. 

Material type: PC40 (TDK) = 3C90 (Ferroxcube) = N67 (EPCOS)

5set EE25 5+5pins Ferrite Cores
AL=1950±25%
Bobbin size:please check the 3rd picture
Core size(mm): (the 2nd 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