The Marine Power Brush Bit is ideal for removing corrosion or oxidation from your marine battery terminals and connections This Marine Brush Bit is designed to work with standard corded/cordless and pneumatic drills and power tools; making cleaning your battery connections fast and easy Fits 3/8 Inches power drill chuck. Marine batteries typically have two posts, a 3/8 Inches-16 threaded post for the positive terminal, and a 5/16 Inches-18 threaded post for the negative terminal. This brush will clean both terminals. Fits 3/8 Inches Power Drill Chuck
