You are buying 3 pieces of EMC Technology / Florida Labs TS0505F SMT Thin Film Chip Attenuator, DC-18GHz, Tape and reel sealed.

Specifications:
Impedance: 50 ohms
Frequency: DC-18 GHz
Value: 5 dB
Attenuation Accuracy: 0.5 dB
VSWR (Max): 1.5
Power Rating (Watts): 0.1
Substrate: Alumina
Resistive Material: Thin Film
Finish: Silver (F)
Rohs Compliant: YES