1. Keep All the Cables Safe and Tidy - The battery terminal connectors have 0/4/8 AWG gauge input, which can connect multiple different sizes to the same terminal and then connect the car battery. It is more aesthetically pleasing and fits perfectly on the battery terminal. 2. Real-time Monitoring the Battery Voltage - Equipped with a 12-24V voltmeter with an error of less than 0.5V, it can correctly detect the real-time battery voltage of the car and allow easy monitoring of battery usage. 3. Effectively Extend the Service Life of the Battery - Made of high-quality material with a coupled fastening ring, it is strong and durable, provides better electrical conductivity, and helps protect the car battery terminals from corrosion, extending battery life. 4. Better Protection - With transparent acrylic covers, it effectively prevents dust and damage from the surrounding environment, protecting the wires and battery terminals. 5. Strong Versatility - The standard automobile battery 17.5mm universal design is adopted, suitable for most car batteries. Item Type: Fastener & Clip Item Weight: 0.2kg Model Name: Car Battery Terminal Connectors Feature: Strong Versatility Color: Silver Material: Aluminum alloy Size: 17.5mm Package Contents: 1 x Battery Terminal (without electronics) 1 x Lid 1 x Fixing Ring Only the above package content is included; other items are not included. Note: Light and different displays may cause the color of the item to appear slightly different from the real thing. The measurement allowed error is +/- 1-3cm.