Effortless Installation: This top post battery disconnect switch requires no additional parts for installation. It connects directly to your battery's top post, allowing for quick power cut-off and system security. Ideal for both novices and seasoned DIY enthusiasts. Durable and Safe: Made from robust plastic with copper connectors, this battery shut off switch is built to last. It effectively resists and prevents accidental short circuits, ensuring reliable performance for daily use. Versatile ON/OFF Control: Offering reliable control with 250 amps for regular operation and 1000 amps for starting power, this switch is compatible with 12-48V batteries. It's suitable for a wide range of vehicles including cars, RVs, and boats. Universal Compatibility: Designed to fit most standard top post batteries (15.5-17mm for negative), this switch provides a versatile solution for battery protection across vehicle types such as cars, trucks, RVs, and boats. Color: Red + Black Material: Brass + Plastic Package Contents: 1 x Top post battery disconnect switch Note: The actual product may have slight color variations due to lighting and display differences, which do not affect functionality. Measurement error allowance is +/- 1-3 cm.