Boating Essentials - 12" Battery Clip Extension - BE-EL-51012-DP 12" 15 amp battery clip extension from T-H Marine. This battery clip extension features insulated 3" corrosion-resistant plated clips with color-coded grips for positive and negative identification. 15 AMP Battery Clip extension with 12" Wire Insulated 3" Corrosion Resistant Plated Clips Color-Coded Grips for Positive & Negative Identification