Description: Materials: This Disconnect Switch is made of premium ABS and Iron material, durable and safe to use. Function: The Battery Power Cut Isolator can minimize battery loss and prevent effective leakage, help prevent battery drain when storing or repairing cars/trucks. Easily to use: Easily to install without complicated tools, can be replaced directly. Just simply remove the red removable key to dissconnect the battery. With Keys: The Disconnect Switch comes with 2 keys, provides an effective way to avoid auto car theft, and can also cut off power on cars to prevent fire. Widely Applications: Perfect for cars, RVs, yachts, trucks, trucks, construction machinery etc. Specification: Material: Iron Size: 145mm/5.71inch Current: 250A Voltage: 12V-24V Screw specification: M10 Package Includes: 1Pcs Battery Disconnect Switch 2Pcs With Keys Note: Please allow slightly errors due to manual measurement and different monitors.