This is one each of New (old stock) Mini-Circuits Wideband Surface Mount Power Splitter/Combiner 4-Way 0-Degree, 75 Ohm 10-1000MHz, Part Number: SCP-4-4-75. Mini-Circuits list price for $28.95 each.
General Spec for SCP-4-4-75:
Detail Spec see Data Sheet at:
http://minicircuits.com/pdfs/SCP-4-4-75.pdf
Test Data and Plots:
http://minicircuits.com/pages/s-params/SCP-4-4-75_VIEW.pdf
http://minicircuits.com/pages/s-params/SCP-4-4-75_GRAPHS.pdf