The MS50-150 from Withwave is a Microwave Absorber with Frequency DC to 18 GHz, Thickness 0.06 Inch/1.5 mm, Thickness 0.06 Inch, Thickness (mm) 1.5 mm, Resistance 1 x 10^6 Ohms. Tags: Cavity Resonance Absorber. More details for MS50-150 can be seen below.