Has good electrical conductivity and is durable for long-term use. Suitable for various applications including digital products, remote controls, toys, communication devices, household products, computer products, security monitors, and audio-visual digital equipment. The socket is flame retardant. Product material: Nickel-plated outer layer, resistant to oxidation. Application: Widely used in car audio, video communications, cassette recorders, stereos, and telephones. Color: Black Material: Plastic Package Contents: 1 x DC 2.1 charging port set Note: The package includes only the items listed above; other products are not included. Note: Lighting effects and monitor settings may cause slight variations in color as seen on screen. Measurement may vary by +/- 1-3 cm.