The EZ-FLEX.250-J-AS from EZ Form Cable Corporation is a RF Cable with Frequency Range DC to 20 GHz, Cut off Frequency 20 GHz, Propagation Velocity 0.79, Attenuation 4 to 32.2 dB/100 ft, Power 255 to 2100 W. Tags: Hand Formable. More details for EZ-FLEX.250-J-AS can be seen below.