Feature: 1. Efficient Power Cut Off: The master battery disconnect switch offers an efficient cut off for battery power, preventing short circuits and extending the longevity of your battery. 2. Ease of Use: This battery on off switch is designed for simple using, enabling quick disconnection or connection of battery power to enhance convenience and streamline your using. 3. Long Durability: With a sturdy structure, this battery isolator switch is highly strong and can function properly even in extreme environments, protecting your battery. 4. Safety Improvement: Serving as a vital safety feature, it helps to minimize the risk of any battery related hazards by providing a secure and efficient method to disconnect the electrical system. 5. Versatility: Battery disconnect switch is versatile enough to suit a variety of applications, offering wide range usability, suitable for DPST kill cut off for nhra nascar ON OFF. Specification: Item Type: Battery Disconnect Switch Material: Metal OE: 51-904, 51-304 Fitment: DPST kill cut off for nhra nascar ON OFF. Package List: 1 x Battery Disconnect Switch Note: 1. Please carefully check if the OEM number matches before purchasing. 2. It is strongly recommended to have the installation done by a professional mechanic.