These are brand new Arduino stacking headers – totally unused and still in their original packaging! They’re perfect if you’re building or prototyping with Arduino boards and need to stack shields neatly. Each header is 6-pin female, tall enough for easy breadboard stacking, and made with quality in mind. Great for DIY electronics, hobby projects, or expanding your Arduino setup. The pack comes with 20 pieces, so you’ll have plenty for multiple projects. From the brand NooElec, model Stacking Header - 1x06p, MPN 100448. No UPC, but definitely genuine and ready to use right out of the pack. Whether you're a maker, student, or tinkerer, these headers make connecting shields a breeze without any fuss. Works with most Arduino-compatible shields and breadboards. Ideal for workshops, classrooms, or home labs. Durable construction ensures a solid connection every time. Get stacking and prototyping today!