Description: Function: suitable for car audio/video system overload ion,prevent excessive current, the electrical appliance. Apply in connecting audio power line,Use in place of an inline fuse holder. Manual open circuit push button,Self-Testing & Manual Override,No fuse change trouble. Can be mounted on panel or firewall,works with 12v-24v DC. Applications: Battery chargers, audio, auto, trucks, buses, marine, RV's, trolling motors, etc. Specification: Material: Metal+ABS Plastic Voltage: 6V-28V Works with 12-24V DC. Size: Approx 51mmX21mm Package Includes: 1 Piece Circuit Breaker Reset Fuseholder Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making payment. Dueto the difference between different monitors, the picture may notreflect the actual color of the item. Please understand,Thank you.