The Dupont crimp pin connector is made of durable plastic and metal, tin plating, internal pure copper to increase conductivity, antioxidant surface coating, increases the service life. Easy to Use: Just put the crimps into the tool and press them, make the insulation crimp completely to the wire. Use a range compatible with Arduino and breadboard type pin headers and sockets, like 3D printer boards, etc. Variety of Dupont connectors: There are 560 pieces in one pack, including JST XHP-2/3/4/5 pin housing, and B2B-XH/B3B-XH/B4B-XH/B5B-XH shrouded headers and JST-XH male and female pins connector. Package: This set includes 20pcs male and female housing total 160pcs, with 2.54mm male female pin header which are 400pcs, stocked in a clear plastic box