Features: The great item for small electronic engineering and CCTV application. Apply for a wide range of applications including replacing or repairing existing connectors. Firmly connect and safely connect, not loosen. Buy with satisfaction and use at ease. High temperature resistant covers and copper pins, durable and reliable. High matching degree and perfect matching, low rate of accidental disconnection. Complete accessories, supplied with washer and hexagonal fixing nut. Specifications: Rated value: 12VDC 1A Working temperature: -20 ℃ ~+ 70℃ Material: plastic Size( Female adapter): approx. 2.1cm / 0.82in (Length), 0.5cm / 0.2in (Innner Diameter) Size( Male adapter): approx.4.5cm / 1.8in (Length), 0.5cm / 0.2in (Outer Diameter) Package Weight: 47g / 1.7oz Package List: 10 Pairs * 2.1x5.5mm DC Power Plug Adaptors Note: Before purchasing, please check whether the products are compatible with your products; and after receiving, please check the packages as below, including quantity, color, and so on. If you have any problems, please contact us at any time.