[CONVENIENT]: Sometimes SAE connectors will not work beacuse the polarity is reversed. With this SAE adapter you can get the correct polarity to your 12V/24V DC systems with SAE quick connection/ disconnection.[TIME SAVER]: These little SAE Polarity Reverse Adapters can swap the polarity of your SAE 2-pin connector. Saves rewiring work when useing the wrong polarity in a DC Accessories. Makes it easy to connect different different devices without reversing the polarity.[EASY TO USE]: Thesae reverse connectors set up and dissassemble easily. Easy way to reverse polarity compatible with you.[WIDE COMPATIBLE]: The SAE Connectors fit compatible with solar panel project, electrical wiring project, cars, motorcycles, light aircraft and industrial equipment. Colour: black Material: metal Size: 47x16x9.3mm Package Contents:5 * Reverse Adapter Connectors 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.