Material: made of high quality pure copper. Insulation protection, no open metal, directly connected to the battery, power supply for appliances, safe to use. Easy Installation: Attach to the battery terminal by tightening the cap. When you change the battery, just lift the insulation shell and replace the battery, then put the clamps back. Size: including a pair of battery connectors and 6 copper ring terminals, light weight . Positive: 17mm or 0.67in, negative: 16mm or 0.63in, copper ring terminal: 40 x 9.5mm or 1.6 x 0.38in. andnbsp Special Protection: The battery terminals with durable fixed red (and) and black (-) covers for easy identification and avoid risk of electric shock. Wide applications: ideal for 6V or 12V battery positive or negative, these battery terminals can be widely used for cars, vehicles, RVs and boats, which are suitable for all standard round size batteries. Product Description Product Specifications: - Material: Pure Copper - Output Power: 6V 12V - Max. Load capacity: 400A - Applicable models: universal cars, batteries, etc. - Color: red and black - Center opening: positive 17mm or 0.67 inch, negative 16 mm or 0.63 inch - Copper ring terminal: 40 x 9.5 mm or 1.6 x 0.38 inch - Box size: 14.2 x 8.3 x 3.4cm or 5.6 x 3.3 x 1.3inch - Weight: 210g or set Package Contents: 2 x Battery Terminals 6 x Copper Ring Terminals Features: 1. The battery terminal connectors are made of copper and come with a plastic cover, which has better corrosion resistance. 2. The inner wire has a small copper core resistance and strong heat resistance, effectively avoiding the problem of excessive wire burning under full load. 3. Each terminal can hold multiple battery cables, threaded already on the terminal, with nuts for faster and easier installation.