Milky White Insulation Polyester Film is a slightly hazy film with excellent handling properties used especially for electrical insulation, transformer (EI-33), motor winding, other general-purpose applications & specially for EI-33 ferrite core bobbin.
Thickness: 5mil (0.127mm)±5%, Width: 16mm±0.2mm, Length: 75cm ±5mm, Color: Semi Transparent Milky White.

EI-33 Magnetic Ferrite Core For High Frequency Transformers, Choke Coils, Inductors etc.
Core shape: EI-33, Size: L=33mm (1.3'') W = 12.5mm (0.49'') H = 29mm (1.14"), Set : One E and One I Ferrites, with One Bobbin.