1. Quick installation: Connect the red to the positive pole and the blue to the negative pole, which can be quickly connected, pull and pull can be taken out, and one set can be connected with one click 2. Product packaging: 2 red fast battery terminal connector, 2 blue fast battery terminal connector 3. Product Name: Quick battery terminal connector 4. Quick Release Battery Connector: Simple and convenient, designed for users who frequently replace batteries. Rated voltage is 500 amps and it can withstand continuous surge of 800 amps at 12 volts NOTE: Item colors may differ slightly from item colors due to different lighting and screen settings. Due to manual measurements, please allow for slight size differences. Dimensions: Thickness 1.5 mm Inner Diameter: Red Positive 19 mm; Blue Negative 17mm Shipping color: blue+red Shipping Quantity: 1 pair