Premium Quality,:The white cover can be removed. Made of premium ABS and metal material, 12V-32V battery disconnect switch is sturdy, not easy to aging and abrasion , to maximum strength and durability for long lasting usage. Waterproof & Protective Cover:This waterproof power disconnect cut off switch is designed with a waterproof cover on the top can better protect the key hole. Professional characteristics, high reliability. Compact size, sleek modern appearance, easy to install and Cable connection. Disconnect Battery Safely:This battery isolator switch can any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely. 2-Position: ON and OFF positions Battery Disconnect Shut Off Switch:They are offered as main car kill disconnect switches, Continuous Rating : 300Amps 32VDC Max. Intermittent Rating : 450Amps Cranking Rating : 1000 Amps . Contact Resistance : 50m ohm Max Insulation Resistance : DC 500V 100M ohm Min Dielectric Strength : AC 1000V 1 minute, DC 2000V 1 minute Operation Temperature : -30 Celsius~ +60 Celsius Switch Function : 2P SPST OFF-ON Mounting Hole : 52mm Wide Application&Quality :The waterproof battery isolator Selector switch is perfect suitable for cars, off road vehicle, truck, motorcycle, boat, etc.Professional characteristics, high reliability. Type: Battery Switch Rated Current: 300A Colour:Black+red Material:Plastic + Metal Size: Mounting Hole: 52mm Binding Post: 10mm Package Contents: 1 x Battery Isolator Switch 2 Cable Only the above package content, other products are not included. Note: Light 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.