This handy fitting enables you to position a USB outlet under a wooden, fibreglass or metal dashboard complete with ruber plug moisture/dust cover. Alternatively, you can remove the actual USB insert to panel mount the USB socket. The insert requires a 22mm dia hole but it will go through upto 38mm of panel so your panel can be wood if necessary. This is a very versatile fitting and you have to see it to appreciate what it is capable of. Features: In-line fuse holder included Sealing washers/gaskets included Mounting screws included Smart silver trim bezel included Fuse Rating: 3A DC Voltage : 12V, 24V DC Voltage Output 1 : 5V 2.1A Mounting Method : Panel Attachment / Securing Method : Collar / Nut Mount Screw Size : 22mm, 38mm Packaged Volume : 0.74l Packaged Weight : 0.08kg Packaged Length : 14cm Packaged Width : 15cm Packaged Height : 3.5cm