1、WORKING PRINCIPLE: One fuse holder on the fuse adapter defend the existing circuit and the other fuse holder protecting the new circuit. 2、EASY REPLACEMENT: This fuse adapter kit is rugged, no cutting required, and very convenient with replacement and installation. Easily add additional power or connections. 3、TROUBLESHOOTING: Our fuse adapter set makes it easy for you to troubleshoot and plug into occupied or vacant supply fuse box slots to replace fragile old glass fuses. 4、LIGHT WEIGHT: This fuse adapter set is light weight and very portable, you can always take it with you to put into maintenance and DIY. 5、ACCESSORIES CAN BE INSTALLED: Our fuse adapter is to install additional accessories, such as car recorder, LED daytime running lights, etc. Item Type: Car Add Circuit Fuse Adapter Material: ABS Wire Length: Approx. 200mm/7.9in Wiring Specification: 14AWG Blade Fuse Specifications: 20A fuse x 20, 10A fuse x 5. 5 x Fuse Adapter 25 x Fuse