Ninth-City Car Boat Truck Battery Disconnect Cutoff Cut Off Isolator Switch 100% Brand New.Capacity: 300 AMPS. Battery kill switch 1/4" x 3/4" Studs.Two 3/16" Mounting Holes. 2pcs Removable Keys included.5/16" Brass Terminals. Solid Brass Nut and Washer.Theft deterrent and fire protection. Master kill switch Extend the life of your Vehicle's battery.