Quantic PMI Model 5CL6D8-100-CD-SMM is A Narrow Bandwidth Cavity Filter with a center frequency of 6.8 GHz and a bandwidth of 0.1 GHz @ 3 dB. Precision machined housing and silver plated to provide the highest possible Q. Package size is 2.90" x 0.60" x 0.75" with SMA female connectors in and out.