Longacre Racing - Positive Battery Charging Post 1-1/4" Mounting Hole Size (45720)When the elecrical system fails, your race car quickly becomes a huge (and expensive)paper weight. Get reliability with Longacre's line of switches and battery components. All of the heavy duty 40 amp switches have silver plated contacts, solid brass mechanisms, and tough phenolic bodies. Battery cables and accessories use high quality copper wire and brass terminals for the best conductivity with the least chance of corrosion and or decay. Positive