Specification:Item Type: Battery Disconnect SwitchMaterial: BrassPurpose: Can be used as a switch for all kinds of electrical equipment added in the car (such as: Strobe light, chassis light, fog light, dome light, instant power off, etc.)Rated Voltage: 12-24VRated Current: 300AInstantaneous Current: 1000AWeight: 390 g / 13.8 oz(approx.)Height: Approx. 110mm / 4.3inScrew Length: Approx. 25mm / 1inScrew Distance: Approx. 15mm / 0.6inScrew Diameter: Approx. 8mm / 0.3inPackage List:1 x Battery Disconnect SwitchNote:This switch has no polarity, it is recommended to install it on the negative (‑) wire/ground wire of the battery (the negative current is smaller, which will be safer); this switch is not waterproof, pay attention to protection