Battery switch m-Series 300A - 2 single pole positions Manual battery switch - M300 Series continuous amps for outboards and small petrol or diesel engines. *Tinned copper rods for maximum conductivity and corrosion resistance. *Studs accept 3/8" (M10) ring terminals. *7/8" (22mm) stud length accepts multiple cable terminals. *Blue Sea Systems one-piece terminal stud design never loosens over time. *Insulating cover with three snap-on side pieces protects rear contacts and allows cable access from any direction. *Enclosure design allows for surface, rear or front panel mounting options. *Waterproof - IP66 rated against water sprayed in powerful jets. - Features: