Compatible: with a long bolt, used for side post terminal, battery side post with 3/8 inch hole only, recommended to mount on NEGATIVE battery post, DC 12V-24V system, 200A continuous and 600A momentary at DC 12V, on/off 2 position.: knife blade type, easy to install & simple to use. Lift , then power will cut.Heavy Duty: solid Metal made, rust and corrosion resistant, durable made for safety use.Purpose: used for battery to isolate and the electrical system, eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely.Used for side post batteries or other batteries which have a 3/8 inch side post terminal, also used for electrical equipment.Material:Metalcolour:Photo ColorPackage Contents:1 * Battery Disconnect Switch (With long )Only the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.