Made of zinc alloy, good conductivity, stable performance and long service life. Works exactly as it's supposed to. Nice size to fit in a Jetski. delivery was fast to Australia Specification: Item Type: Batteries Switch Material: Zinc AlloyRated current: 80AInstallation: install to the negative electrode of the batteryFeatures: Car motorcycle disconnect battery cut off Kill terminal anti-leakage switch. Car Battery Disconnect Switch,12V/24VBattery Cut-off Anti-leakage Switch Quick Cut-off Switch Car Battery Cut Off Switch Jadeshay Motorcycle Battery Switch Motorcycle Battery Off Remote Battery Disconnect Switch Package list: 1 x Battery Switch Car motorcycle disconnect battery cut off Kill terminal anti-leakage switch. Easy to install, install to the negative electrode of the battery Made of zinc alloy, good conductivity, stable performance and long service life. Easy to operate, disconnect and reconnect the battery with a simple knob Easy to install, install to the negative electrode of the batteryMade of zinc alloy, good conductivity, stable performance and long service life. Easy to operate, disconnect and reconnect the battery with a simple knob.