Clean Wiring: Our power distribution block terminal strips greatly simplified and neatened up your install. This way you can easily disconnect a wiring branch without taking down the entire system Quality Material: Our positions electrical terminal blocks are made from polycarbonate with flame retardance and nickel-plated copper with excellent electrical conductivity and anti-oxidation performance, to keep working stably and extend lifespan Protect Cover Design: It will be more safer when the terminal blocks are protected by plastic lids to avoid accidental touching when use. We also provide red and black jumpers to help customers distinguish positive and negative wire when installation. The shell can not break in an environment with low temperature Easy Install: The distribution block terminal strip blocks are easy to install and held in place by two screw holes at either end of the terminal. Standard spade crimp type connectors work well and you have the option of of making individual connections or by using the whole barrier bar or part of it up to multiple connections to a single line Package Included: Terminal Blocks Set - 2pcs x 15A 8 Position Terminal Strip, 2pcs x 15A 10 Position Terminal Strip,2pcs x 15A 12 Position Terminal Strip,6pcs x Pre-Insulated Terminal Jumper Block (Red&Black). This terminal blocks come with suitable pre-insulated jumper block to meet different needs, easy to install and remove. For any problems, please do not hesitate to write to us 6 Sets 8/10/12 Positions 600V 15A Terminal Blocks Ground Circuit Dual Row Bus Bar Wire Screw Terminal Block Kit with Cover 600V Pre Insulated Terminal Strip WW004-15081012