2-position battery disconnect switch 12v for DC 12-48V systems. Ratings: 300A DC continuous (1 ), 455A DC intermittent (5 min), 1250A DC cranking (10 sec). Studs: 2 x 3/8inch (M10) tinned copper. Nylon 66 and solid brass for excellent conductivity and resistance. Compared to typical ABS plastic used in many similar products, Nylon 66 offers over 30% greater strength and flame resistance. This car battery disconnect switch gives you simple control with ON, OFF, and remove-knob settings. Twist to shut off power when parked, or take the knob with you to prevent theft or tampering. A handy battery cut off switch that makes life easier and your vehicle more secure. Direct-mount side post battery switch 12v with included copper conductive sheet/bracket; connects to side-terminal batteries without extra adapters, saving under-hood space and time. Operation Mode:ON-OFF Current Rating:300 Amps Operating Voltage:12 Volts Contact Type:Normally Open Connector Type:Clamp For cars, trucks, RVs, marine/boats, campers, travel trailers, ATVs/UTVs, battery . Thread spec: most side-post batteries are 3/8-16 UNC. Before purchase, confirm side-post battery, thread match (usually 3/8-16), install on , and clearance to twist the knob Color:Black Material:plastic Package Contents: 1 * Top Post Battery Disconnect Switch Only the above package content, other products are not included. Note: Light reflection 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.