metal case battery brushBattery terminal and post cleanerAll metal construction/nickel platedRemove battery corrosion to extend battery's lifeUse bottom brush for cleaning battery postsUnscrew top and use inside brush for cleaning battery terminalsBulk and blister card are availableOEM orders are welcomeHigh-qualitySmall enough to tuck away in your pocket, the battery terminal cleaner features a high impact ribbed body for a firm grip. The tapered brush scours the inside of battery clamps while the terminal cleaner removes corrosion. Keep one in every vehicle. Cleans battery posts and terminals of corrosive build-up. Internal and external wire brushes built in to the rugged steel case. External brush for cleaning cable clamps, internal brush for posts