These high quality male pin header connectors are essential electronic components, connector raw materials. Widely used in electronic circuit, electrical appliances, instrumentation ,PCB circuit board and so on. Can be cut into the size you need. Electronic factory can buy these male pin header connectors as part material, college students who major in electronic engineering or automation can use them to create high-tech products to participate in science and technology competition project. Warm notice:Small parts, please keep them away from children. Adult supervision is required. Suitable for Arduino, Raspberry Pin or any other electronic project. Straight mounting, Single row, Male pin header, essential electric component, easy to use. Good quality header pins, header pins on 0.1 centers. They are easy to be cut to any length if needed. They are suitable for electronic project. Pin pitch: 0.1 inches / 2.54mm Number of pins: 40 pin Type of row: Single-row Type of connector: straight Material:Iron+Plastic Colour:Silver Black Package includes:100 x Male pin header connector Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.