Photo 1 of Extreme Max 3005.4428 Aluminum Slider Base with Pre-Drilled Mounting Holes for Crestliner SureMount Gunnel System - 5-5/8" x 5-5/8" Mounting Plate, Silver

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Photo 1 of Extreme Max 3005.4428 Aluminum Slider Base with Pre-Drilled Mounting Holes for Crestliner SureMount Gunnel System - 5-5/8" x 5-5/8" Mounting Plate, SilverPhoto 2 of Extreme Max 3005.4428 Aluminum Slider Base with Pre-Drilled Mounting Holes for Crestliner SureMount Gunnel System - 5-5/8" x 5-5/8" Mounting Plate, Silver