Used when the SAE head wire of automotive peripheral products is incorrectly connected. SAE plug can be used to convert positive and negative LED outdoor lights, solar-powered charging cables, mobile power to car small household appliances, battery car conversion power, one-time molding. The outlet polarity of different brand solar panel chargers maybe different. And the polarity may be reversed when the solar panels connect with the other brand SAE quick connection extension cable,solar charger regulators,and DC power kit These SAE plugs would be make it very easy to convert the reversed polarity. The sae polarity reversed adapter is SAE to SAE connector, it is compatible with battery tender and the other brand SAE connector wires. This sae adaptors can be connected with 12V/24V DC systems. Do not use to make connections exceeding 20A(current). This connect plug would be the easiest way to make the reversed polarity correct for SAE to SAE connector Product name: SAE adapter Length; 4.7 cm Current: 1-30A Voltage: 1-36V Wire diameter Input interface: 4.5mm male and female Output interface: 4.5mm male and female Product weight: 9g Colour:As shown Material:Plastic + Metal Package Contents: 10 x SAE Polarity Reverse Adapter Only the above package content, other products are not included. Note: Light reflection 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.