Battery Terminal Corrosion Prevention Washers, Red & Green, Total 2 Pieces, Fiber Protector [Prevents corrosion that easily occurs around battery terminals] [Quantity] Includes 2 battery corrosion prevention washers. 1 red and 1 green. [Size] The inner ring can be removed to fit larger terminals, and the outer diameter is approximately 46 mm. The inner ring diameter is approximately 19mm. The diameter of the inner ring after disassembly is approximately 30mm. [Material] Thick felt material, fine workmanship, quick and convenient installation, prevents corrosion around the battery terminals. [Color] Color-coded for positive and negative terminals, red is +, green is -. [Application] Can be used for both top post batteries and cables, and side post batteries and cables. (White powder) The identity of the white powder is called "lead sulfate rust". It is crystallized by reacting with the battery terminal (lead) due to leakage of liquid from the battery. (Blue powder) The identity of the blue powder is called "verdigris". It is generated when gas generated in the battery leaks out and reacts with copper such as terminals. We also offer other convenient car accessories that can be shipped together. ↓ ↓ ↓ #MHYCar Vehicle installation examples Alphard Vellfire Esquire VOXY Noah Harrier Hiace C-HR Crown Camry Corolla Sienta Prius Roomy Tank Yaris Raize Land Cruiser RAV4 Odyssey Vezel CR-V Fit Step WGN Freed N-WGN N-BOX N-VAN Note Juke X-Trail Elgrand Days Roox Serena Wagon R Solio Hustler Crosby Jimny Swift Legacy Impreza Levorg XV Forester BR-Z Mazda 3 CX-3 Tanto Move Chaos caos sb Atlas Yuasa gs Bosch bosch acdelco hitachi varta Optima Infinite Furukawa 17 19 20 24 23 26 31