You are buying 3pcs Mini-Circuits ADE (Footprint: 98-PL-051) Mixer Development Evaluation PCB Boards.
Note: These PCBs are for Footprint 98-PL-051 and is only compatible with the following PNs: ADE-R35LH+, ADE-18WLH+, ADE-751MH+, ADE-35+, ADE-20+, ADE-12H, ADE-10H+, ADE-18W+ and ADE-901+
PCB Size: 1.12" x 0.69" x 0.062"
Material: FR-4
Number of sides: double-sided with solid gold-plated ground on the back with gold plated traces.
Connectors: 3 Female SMA edge launch connectors included (PCB will accept standard edge launch connectors with 0.062 (1.6 mm) spacing)
PCB color may vary.
If you want to purchase just the board and connectors then see the link below.