1Premium Material: Made of pure copper tinned and material with excellent electrical conductivity that can reduce voltage distortion and transmission loss. 2Unique Design: The positive and negative is clearly labeled on the battery terminal connectors that you can easily recognize. 3Widely Use: Our battery terminal connectors are compatible with cars, vans, caravan, tachts, trucks, pickups, buses, etc. Works on round post auto batteries Sae/Jis Type A automatic batteries. 4Easy to Operate: Equipped with a hex wrench which can help you to complete installation more convenient and easier. The products included can fully meet your need. 5Fine Workmanship: Professional manufactured, exquisite workmanship with unique design, ensure stable performance and high reliability.