Knife-Switch In-Line Battery Disconnect - This in-line disconnect can be mounted under the hood or in the location of your choice. It does not attach to battery, simply run a new cable to the switch, connect the battery cable to the post on the switch. Should be mounted in a well ventilated area. Capacity is equal to a #1 AWG battery cable; for all voltage systems. Both terminals are 5/16 inch bolts for receiving eyelet cable connectors. Carries 250 Amps continuous and a maximum surge of 750 Amps. Mounting hole is 1/4 inch in diameter. Dimensions: 3 inch W x 4 inch L x 2 inch H. 1 per package.