Usage Tips: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. and Safe: Made from robust plastic with copper connectors, our 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 perfect 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 is a versatile solution for battery protection across various vehicle types such as cars, trucks, RVs, and boats. The actual product may have slight color difference or difference, which not affect the use Color: Red + Black Material: Brass + Plastic Package Contents: 1 x Top post battery disconnect switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.