Working on electronics, repairing old computer stuff, or building a custom wiring harness? You'll probably need some of these. This is a pack of TEN 12-pin female IDC connectors. 'IDC' means Insulation Displacement Connector – you basically press a flat ribbon cable into it, and the contacts slice through the insulation to make a connection. No soldering needed! The pitch (space between pins) is the super common 2.54mm (0.1 inches). The layout is 2 rows of 6 pins, so it's a 2x6 female connector. They're made by CablesOnline (model FC-012-10) and are crimp termination type. These are super handy for connecting things like LCD screens, internal computer cables, or any project using ribbon cable. Brand new in package. Great to have a bunch on hand for prototyping or repairs. Just make sure you have the right tool (an IDC crimp tool or a vise) to press the cable in properly!