The MAB-03 from KITAGAWA INDUSTRIES America, Inc. is a Microwave Absorber with Frequency 100 MHz, Thickness 0.02, 0.04, 0.08, 0.16 Inch/0.4, 1, 2, 4 mm, Thickness 0.02, 0.04, 0.08, 0.16 Inch, Thickness (mm) 0.4, 1, 2, 4 mm, Magnetic Permiablitity 7 u. Tags: Ferrite. More details for MAB-03 can be seen below.