Features: 1.Premium Material: Made of pure copper tinned and material with excellent electrical conductivity that can reduce voltage distortion and transmission loss. 2.Unique Design: The positive and negative is clearly labeled on the battery terminal connectors that you can easily recognize. 3.Widely 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. 4.Easy 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. 5.Fine Workmanship: Professional manufactured, exquisite workmanship with unique design, ensure stable performance and high reliability. Specification: Item Type: Car Battery Terminal Clamp Material: Pure copper tinned, plastic housing Screw Diameter: 6mm Product Inner Diameter: 16-18mm Positive Inner Diameter: 17.5 mm/0.69 inch Negative Inner Diameter: 16mm/0.63 inch Application: for SAE/JIS type A automatic batteries PackageList: 1 x Positive Terminal Clip 1 x Negative Terminal Clip 1 x Hexagonal Wrench 4 x Gasket Note: Please allow a 0.5?1 mm difference due to manual measurement.