Isolate and secure the electrical system. Disconnects the battery safely, to any from the battery when vehicle or boat is not in use. , allowing it to be a standalone unit, or linked together with other similar . Rotary dial to lock the selected position. Features - Color: Assorted color. - Material: ABS and copper. - Size: 6.40X4.30X3.70cm/2.52X1.69X1.45in - Product voltage: 12V/24V. current: 300A. - Product current: 100A. - Thread diameter: 6mm. - Adopts well-conductive copper pin and ABS housing. - With strain relief clip and bushing to fix the cord, more stable and safer wire connection. - Simple installation, even if a green hand can install it perfectly within minutes. - Wide range of uses, can be used as interior and exterior of the increase in all kinds of electrical devices on / off key ( : Strobe, chassis lights, fog lights). - Easy operation: disconnect and reconnect battery by one simple turn of the knob . Package list: 1 x 4 x heat shrink tubes 4 x terminals