Dual-slot fuse holder: provides one fuse holder to protect existing circuit and a second fuse holder to protect new circuit Easy to use: plugs into Occupied or vacant energized fuse block slot. Easy installation of additional circuits without splicing or cutting Versatility: Use when hardwiring or adding LED strips, dash cams or other electronic devices that require direct wiring into the fuse box Superior quality: made from high quality materials, good bending performance, melting resistance and excellent electrical conductivity Package include: 5x Add-A-Circuit fuse holder, 10 x 10A fuse