- Made from high-quality materials for practicality and long service life. - Testboard kit enables quick assembly of a useful component to build a simple circuit and evaluate its performance. - Damping pad provides a learning tool for vector network analyzers and filter experiments. - Filter content and compatibility: includes 1 testboard circuit board compatible with dip pads of the Vnwa test board and additional 0805 and 1206 STM pads; 6 SMA end connectors (same type); 4 copper spacers (6 mm); 4 M2.5 screws (4 mm); 2 40-pin SIL-2 SMD resistors (49R9) 1% 0805; Vector Internet Testboard. - 2-3 practical use scenarios: - Quickly prototype and evaluate a simple RF circuit using VNWA or similar instruments. - Use as an educational tool to learn about damping, VNA measurements, and filter behavior. - Assemble and test impedance matching networks and filter performance in a lab or workshop. - Key attributes: durable material, compact size, compatible with VNWA test boards, includes required connectors, spacers, screws, and SMD resistors for immediate use.