1.Strong compatibility:such SAE adapter connectors applied on 12V/24V DC systems to be compatible with all kinds of SAE quick connection/ disconnection extension cable plugs.2.widely used:SAE Polarity Reverse Adapter Connectors suits for solar panel project, electrical wiring project, cars, motorcycles, light aircraft and industrial equipment.3.strong and sturdy:The SAE adapter's plug is rugged, no wires required, straight-through,compact,plug-in switch lever.can be connected to a 12V / 24V DC system of car,The maximum current is 30A.4.Function:to make the polarity of quick disconnect extension cable/ connectors reversed.Colour:BlackMaterial:plasticPackage Contents:5 x SAE Polarity Reverse Adapter ConnectorsOnly 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.