1. Thickened connector DC5.5mmx2.1mm female to DC8.0mm x 2.0mm male converter head suitable for portable power station solar generators; 2. The adapter is made of high-quality materials and has reliable performance. Its sturdy structure ensures stability during operation. 3 . DC8020 to DC5521 converter head: Female connector: Thickened DC5.5x2.1mm connector, this end is plugged into a power adapter, Male connector: DC8.0x2.0mm, this end is plugged into an energy storage power supply. 4. Easy to use, quick connection without tools, plug and play, easy to use in various applications, convenient to use. 5. Widely used: LED outdoor lights, mobile power supplies for automotive appliances, and solar equipment, DC 5.5x2.1 Female to 8.0x2.0 Male Adapter Connector 5.5x2.1: Outside Diameter: 5.5 mm , Inside Diameter: 2.1 mm 8.0x2.0: Outside Diameter: 8.0 mm , Inside Diameter: 2.0 mm Color: black Material: ABS Package Contents: 10 x DC5.5 female to 8020 male adapter Only the above package content, other products are not included. Note: Light reflection 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.