1.In emergency situations, battery booster cables are very suitable for use in cars. 2.The new PVC material and ultra-sturdy pure copper teeth can be firmly connected.Reinforced clip, stable current, fixed sheath, safe insulation.Copper end clamps with PVC-coated handles provide protection.The wires are covered with a thick PVC insulation layer to provide flexibility without . 3.The 4-meter-long flexible cable is convenient to connect with two vehicles.Color recognition is high, red is positive and black is negative. Effectively reduce the risk of accidental short circuit. 4.[Recommended use]: 500A/600A It is suitable for vehicles with displacement less than 2.0cc Type:Emergency Power Start Cable Wire length: 4 meters.a single wire is about 2 meters THE CONNECTION PROCEDURE IS AS FOLLOWS: (1) First, clamp the red wire of the starting cable on the positive pole of the red battery of the "rescued car". (2) Then clamp the red wire at the other end to the positive pole of the red battery of the "rescue vehicle". (3) Clamp the black wire onto the black negative battery of the "saved". (4) Then clamp the black wire on the black negative battery of the "rescue vehicle". (5) Start the engine of the "rescue vehicle" first, and then start the engine of the "rescue vehicle". If you find that the rescued vehicle still cannot be started, please check whether the metal contact part is in poor contact. PRECAUTIONS: 1. The two vehicles cannot have any contact, and the two vehicles must have the same voltage. 2. If the battery freezes in winter, please do not use this cord. 3. Before connecting, the engines, audio and air conditioners of the two cars need to be turned off. 4. After you finish starting the engine, you need to remove the wire in the reverse order, otherwise it maycause a short circuit Colour:Red+black Material:PP+PVC+Copper Package Contents: 1 Set * emergency power cord Only the above package content, other products are not included. Note: Light 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.