The BM10074 from Bracke Manufacturing is a RF Variable Attenuator with Frequency DC to 18 GHz, Attenuation Range 0 to 69 dB, Attenuation Accuracy ±0.8 to ±2 dB, Power 2 W, Insertion Loss 1.5 dB. Tags: Benchtop, Rotary. More details for BM10074 can be seen below.