One red (positive) and one blue (negative) clamp, cable is affixed by a screw clamp Designed for top post batteries and side post batteries with standard post adapters. Positive: 19mm. Negative: 17.5mm The battery terminal connectors can fit all 4-6 gauge wires and rated 500 amps continuous 800 surge at 12 volts. Attach to battery terminal by clamping down the cap, lift cap to remove from battery terminal. Easy identifiable red and blue covers reduce risk of electric shock. Quick release design of lifting caps to remove item from battery terminals take seconds When you want to change the battery, you just need to lift the insulation shell and replace the battery and reattach the clamps Colour:Red+blue Material:ABS Package Contents: 1 x Red clamp - positive pole 1 x Blue clamp - negative pole Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.