1. Achieve the standards of reliable product. Good contact interface and fine electrical properties.2. Easy to use. No need for cutting and soldering, plug and play.3. Connect properly and connect securely, do not loosen. Buy with satisfaction and use in a simple way.4. High temperature resistant casing and copper pins, durable and reliable.5. High match rate and perfect match.Spec:This DC socket/connector is like another DC socket/connector we provide, except it ends on a breadboard friendly pin rather than a wide welded terminal. They are also compatible with our DC power supply and have 5.5mm jack, and the diameter of the center rod is 2.1mm.Features:Meet the standards of reliable products. Good contact interface and fine electrical properties. Easy to use. No need for cutting and soldering, plug and play.Plug and connect securely, do not disconnect. Buy with satisfaction and use easily. Work flow and durability, which saves time. High temperature resistant housings and copper pins, durable and reliable.High degree of matching and perfect matching.Specifications:Type: electronic components, othersColor: Black Larger compatibilities: for Diecimila/Duemilanvoe 328, Mega 1280, Mega 2560, 328Size (L * W * H): 1.45 x 0.90 x 1.00 cm / 0.57 x 0.35 * 0.39 inch. >Package Weight: 65g /2.3oz Package List:50 * DC Power Barrel Adapters