5-piece set of 2x40-pin double-row male header connector strips Key features - Pitch: 2.54 mm (0.1 inch) standard spacing for reliable mating with 0.1" headers, sockets, and related components - Length: 21 mm per strip - Configuration: 2 rows of 40 pins per strip (80 contact positions per strip) - Set composition: 5 identical strips designed for PCB board connections Why you need it - Provides many connection points for expanding and wiring your PCB systems - Standard 2.54 mm pitch ensures compatibility with common headers, sockets, and prototyping setups - Compact 21 mm length fits in tight PCB layouts without crowding Applications and scenarios - Prototyping and development: connect microcontrollers, sensors, and modules to a main PCB for rapid testing and iteration - PCB assembly and expansion: attach daughter boards or expansion modules to a primary board using reliable multi-pin connections - Testing rigs and temporary wiring: set up flexible, reusable connections for diagnostics and bench testing Compatibility and performance - Designed for standard 2.54 mm pitch systems, facilitating straightforward integration with existing 0.1" header ecosystems - 80 contact positions per strip provide ample wiring points for complex PCB interconnects - Suitable for a variety of PCB board applications requiring a robust, ready-to-use male header framework