Bonsicoky 40 Pack Battery Terminal Washer Pad, Anti Rust Washers for Car Battery, Fiber Felt Protector for Top and Side Post, Red for Positive Green for Negative, Removable Inner Ring

["Felt material absorbs and traps acid residue: Each battery terminal washer pad is crafted from fiber felt, a material that absorbs battery acid residue and prevents it from reaching the metal terminal. This barrier effect helps stop terminal damage before it starts, keeping your battery connection clean and reliable","Color coded for easy installation: These anti rust washers feature red for positive terminals and green for negative. The clear color coding eliminates guesswork during installation, helping you quickly identify which washer goes where and reducing the chance of incorrect placement","Removable inner ring for two size options: Each battery protector washer has a detachable inner ring. Use the full 20mm inner diameter for standard terminals, or remove the inner ring to expand to 30mm for larger posts. One washer adapts to both sizes, saving you from buying multiple products","Compatible with top and side post batteries: These battery terminal felt washers work with both top post and side post battery terminals. Whether you have a standard car battery, marine battery, or 6V/12V equipment, these protectors fit securely around the terminal to provide consistent protection","40 piece bulk set for multiple vehicles: This pack includes 40 battery anti rust washers, split evenly between 20 red and 20 green. With 20 complete sets of positive/negative pairs, you have enough to protect multiple vehicles, share with family, or keep spares for future battery replacements"]