Universal 12V Quick Release Battery Terminals Clamp for Car Van and More Features: The Battery Quick Release Connectors allow for quick removal charging and storage of your bo.at or vehicle battery. Ideal for battery installs in tight spaces. Designed for top post batteries and side post batteries with standard post adapters. Quick Release Design - Attach to battery terminals by clamping down and Lift caps to remove from battery terminals. Heavy Duty - Fits 4 to 6 gauge wires and is rated for 500 amps continuous 800 amps surge at 12 volts. Specifications: Type: Battery Terminals Material: Metal + Plastic Quantity: 1 pair (Red cover and blue cover) Internal diameter (positive): 19mm/0.74'' Internal diameter (negative): 17mm /0.66'' Item Size: 6.9x4.7x2.8cm / 2.7x1.9x1.1" One red (positive) and one blue (negative) clamp. Cable is fixed by a screw clamp. These are for round conventional terminal batteries only. This product, used to fix the wires, is designed for users who often needs to change the battery. when you want to change the battery, you just need to lift the insulation shell that can quickly remove the battery, and then put a new battery, which can be fixed firmly . Easy and convenient. Package Included: 1 pair Battery Terminal