The Global Specialties WK-6 Jumper Wire Kit comes with 112 pieces of #24 gauge, insulated, stranded copper wire. Each wire comes with gold-plated brass, pressed-pins on each end to allow for extended insertion life and maximum surface contact. The WK-6 is designed to work with Global Specialties trainers and solderless breadboards, Arduino, and Raspberry Pi. Each kit comes in a convenient plastic case. The WK-6 is UL approved and RoHS compliant.