60 straight single insertion connectors with 2.54 mm spacing and 40 pins per connector includes a detachable PCB board 40Pin male connector kit designed for Arduino prototype boards, DIY design, and circuit design Key specifications Spacing: 2.54 mm (0.1 inches) Pins per connector: 40 Needle lengths: 10 mm and 17 mm Material: insulated plastic body; hard metal needle Packaging: 60 needle sets total Color options: 6 colors with 10 needles of each color white, green, yellow, red, blue, and black What you get 60 straight single insertion connectors in a readytouse kit 10 needles of each color for easy color coding and organization A detachable PCB board 40Pin male connector kit for quick prototyping Why this matters Standard 2.54 mm spacing ensures wide compatibility with Arduino projects, breadboards, and other 0.1 in pitch systems 40pin configuration supports common microcontroller and peripheral layouts Color coding helps you organize wiring and reduce connection errors Durable insulated plastic body with hard metal pins provides reliable, repeatable connections Compatible use cases Prototyping Arduino projects: connect sensors, modules, and breakout boards with repeatable 0.1 in spacing DIY circuit design and testing: build and test custom circuits on a prototype board with a detachable 40pin header Education and refurbishment: colorcoded tooling to teach electronics concepts and maintain consistent wiring Notes All product spacing is 2.54 mm (0.1 inches) Needle lengths available in 10 mm and 17 mm variants Packaging comprises 60 needle sets, with 10 needles per color across white, green, yellow, red, blue, and black This kit provides a straightforward, reliable solution for Arduino prototyping and DIY circuit design, with clear color coding and a detachable 40pin header assembly for flexible, reusable use.