A. Automobile Battery Insulation Cover - There are a total of 20 pieces, made of heat - insulating flexible rubber material, designed as an angled sleeve. It includes 10 red automobile battery covers and 10 black automobile battery covers. B. Corner Protection Insulation Connector Cover - It is suitable for terminals with a maximum diameter of up to 20 mm, with a diameter of 12 mm. Product size: 20×12 mm. C. Function - It can slide over the battery cable and cover the battery terminals to help prevent accidental short - circuits and corrosion at the connections, protecting the vehicle, electronic and electrical systems (such as starters, alternators, etc.). D. Wide Application - It is suitable for various battery and battery cable application scenarios, including automobiles, trucks, SUVs, boats, motorcycles, all - terrain vehicles, scooters, generators, snowmobiles, commercial, industrial, backup power, agricultural, etc. E. Durability - It is rust - proof, with relatively high tensile strength and can be used for a long time. F. Specifications - **Material**: PVC - **Size Chart**: 43 mm/1.69 inches G. Package Contents - There are 20 pieces of battery terminal insulation protection sleeves. H. Precautions 1. Due to manual measurement, some slight errors may occur. 2. Due to differences between different displays, the pictures may not accurately reflect the actual color of the item. 3. Wish you a pleasant online shopping experience!